CN109612734A - A kind of cylinder pressure sensor constant temperature and pressure control device and method - Google Patents
A kind of cylinder pressure sensor constant temperature and pressure control device and method Download PDFInfo
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- CN109612734A CN109612734A CN201811618400.3A CN201811618400A CN109612734A CN 109612734 A CN109612734 A CN 109612734A CN 201811618400 A CN201811618400 A CN 201811618400A CN 109612734 A CN109612734 A CN 109612734A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000000498 cooling water Substances 0.000 claims abstract description 56
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 12
- 238000001802 infusion Methods 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Fluid Pressure (AREA)
- Control Of Temperature (AREA)
Abstract
The invention belongs to engine test facilities and engines cylinder pressure sensor constant temperature and pressure technical field, and in particular to a kind of cylinder pressure sensor constant temperature and pressure control device and method；Wherein expansion tank and circulating pump piping connection, circulating pump and engines cylinder pressure sensor cooling water ring piping connection, engines cylinder pressure sensor cooling water ring and the 4th entrance E piping connection, second outlet F and plate heat exchanger piping connection, third entrance D are connected on the outlet pipeline of circulating pump by tee pipe fitting；First entrance A goes out sailor's valve piping connection, cooling water water inlet hand valve and plate heat exchanger piping connection with cooling water water inlet hand valve and plate heat exchanger piping connection, second entrance B and plate heat exchanger piping connection, first outlet C and cooling water respectively；Plate heat exchanger realizes the accurate control of cylinder pressure sensor temperature by programmable controller with circulating pump water inlet piping connection.
Description
Technical field
The invention belongs to engine test facilities and engines cylinder pressure sensor constant temperature and pressure technical field, and in particular to one
Kind cylinder pressure sensor constant temperature and pressure control device and method.
Background technique
During engine test, it is often necessary to (such as: cylinder pressure sensor, back pressure transducer to some sensors
Deng) cooling treatment is carried out, for guaranteeing the normal work of these sensors.In addition, some special sensors are in order to guarantee it
Measurement accuracy, it is also necessary to which accurate constant temperature, Isobarically Control are carried out to it.
Sensor cooling device used at present can only pass through plate heat exchanger and fan to sensing using outer loop
Device is cooled down, and this cooling device can only guarantee that sensor will not be damaged because of high temperature, is unable to control senor operating temperature
And pressure, which results in sensor measurements to generate deviation because of external environmental factor difference, and existing sensing
The work of device cooling device is extremely unstable, usually because water pump or fan break down, and leads to that sensor temperature is excessively high and damages.
Summary of the invention
In order to overcome the above problem, the present invention provides a kind of cylinder pressure sensor constant temperature and pressure control device and method, belongs to
Engines cylinder pressure sensor cooling device ensure that the measurement accuracy of engines cylinder pressure sensor, prevent cylinder pressure sensor from overheating
It burns out, realizes the accurate control of cylinder pressure sensor temperature and pressure.
Technical scheme is as follows:
A kind of cylinder pressure sensor constant temperature and pressure control device, including expansion tank 1, circulating pump 3, engines cylinder pressure sensor
Cooling water ring 7 and plate heat exchanger 14, wherein 31 piping connection of circulating pump water inlet on expansion tank 1 and circulating pump 3, recycles
71 piping connection of water inlet of circulating pump water outlet 32 and engines cylinder pressure sensor cooling water ring 7 on pump 3, the pipeline are to follow
The outlet pipeline 13 of ring pump, is disposed with flow switch 4, leaving water temperature sensors 5 on the outlet pipeline 13 of the circulating pump
With first-hand valve 6, the first ratio three-way control valve 11 is equipped with third entrance D, the 4th entrance E and second outlet F, engine cylinder
4th entrance E piping connection of the water outlet 72 of pressure sensor cooling water ring 7 and the first ratio three-way control valve 11,
The second outlet F of first ratio three-way control valve 11 is connect with the entrance pipe of plate heat exchanger 14, the first ratio
The third entrance D of three-way control valve 11 is connected on the outlet pipeline 13 of circulating pump by tee pipe fitting；And in cylinder pressure of engines
It is disposed on the water return pipeline 111 that the water outlet 72 of sensor cooling water ring 7 is connect with the first ratio three-way control valve 11
Second-hand's valve 8, pressure of return water sensor 18, return water temperature sensor 9 and automatic exhaust steam valve 10, the second ratio three-way control valve 15
It is equipped with first entrance A, second entrance B and first outlet C, first entrance A is intake with cooling water respectively hand valve 16 and board-like to be changed
Hot 14 piping connection of device, 14 piping connection of second entrance B and plate heat exchanger, first outlet C and cooling water go out the pipe of sailor's valve 17
Road connection, while piping connection between cooling water water inlet hand valve 16 and plate heat exchanger 14；The outlet of plate heat exchanger 14 with follow
31 piping connection of ring pump water inlet mouth, is provided with third hand valve 12 between circulating pump water inlet 31 and circulating pump water outlet 32.
Pressure of return water sensor 18, the first ratio three-way control valve 11, return water temperature sensor 9 and the second ratio threeway tune
Section valve 15 is connect with programmable controller controls.
It is provided with magnetic double level gauge 2 on the expansion tank 1, for showing the liquid level in expansion drum.
Second ratio three-way control valve 15 is equipped with first entrance A, second entrance B and first outlet C, according to return water temperature
The temperature that sensor 9 detects, comes whether control loop water needs to be cooled down by plate heat exchanger 14, if actual temperature is high
In setting value, then need to cool down: programmable controller can close first entrance A, and cooling circulating water is intake hand by cooling water
Valve 16 flows into, and through plate heat exchanger 14, is flowed out by first outlet C, goes out sailor's valve 17 through cooling water and flow back to；If actual temperature is not
Higher than setting value, then do not need to cool down, programmable controller can close second entrance B, cooling circulating water by cooling water into
Sailor's valve 16 flows into, and is flowed directly out by first outlet C, goes out sailor's valve 17 through cooling water and flow back to, without plate heat exchanger 14, no
It needs to cool down；When actual temperature and close set temperature, the adjustable second ratio threeway tune of programmable controller is utilized
The position for saving 15 spool of valve, allows first entrance A, second entrance B to open, but need not be fully open, then flowed by first outlet C
Out, the continuous control of temperature is thus realized.
A kind of above-mentioned cylinder pressure sensor constant temperature and pressure control device realization cylinder pressure sensing is used present invention simultaneously provides a kind of
The accuracy control method of device temperature, the specific steps are as follows:
Step 1 checks the liquid level of expansion tank 1 before activation in order to ensure equipment normal use, see liquid level whether
1/2 or more, if the liquid level of expansion tank 1 is lower than 1/2, water-refilling operation should be first carried out, the fluid infusion on expansion tank 1 is beaten
It opens, carries out fluid infusion operation, liquid level to 1/2 to 2/3 position, fluid infusion is completed, fluid infusion is closed；
Step 2, opens first-hand valve 6 and second-hand's valve 8 and cooling water water inlet hand valve 16 and cooling water goes out sailor's valve
17；
First ratio three-way control valve 11 is got to fully open position manually when first used by step 3, adjusts third hand valve
12 aperture makes the pressure value 3bar of pressure of return water sensor 18；
Step 4, equipment operation need to cool down if actual temperature is higher than setting value: programmable controller can incite somebody to action
First entrance A is closed, and cooling circulating water is flowed by cooling water water inlet hand valve 16, through plate heat exchanger 14, is flowed by first outlet C
Out, go out sailor's valve 17 through cooling water to flow back to；If actual temperature is not higher than setting value, do not need to cool down, program controller PLC
Device can close second entrance B, and cooling circulating water is flowed by cooling water water inlet hand valve 16, be flowed directly out by first outlet C, through cold
But water goes out sailor's valve 17 and flows back to, and without plate heat exchanger 14, does not need to cool down；When actual temperature and close set temperature,
Using the position of adjustable second ratio three-way control valve, 15 spool of programmable controller, first entrance A can be allowed, second
Entrance B is opened, but need not be fully open, is flowed out in first outlet C, is thus realized the continuous control of temperature；
Step 5, if the pressure of pressure of return water sensor 18 is higher than setting pressure, programmable controller can be by first
The third entrance D of ratio three-way control valve 11 is opened, and the 4th entrance E of the first ratio three-way control valve 11 is closed, and makes return water pressure
The pressure reduction of force snesor 18；
If the pressure of pressure of return water sensor 18 is lower than setting pressure, programmable controller can be by the first ratio threeway
The third entrance D of regulating valve 11 is closed, and the 4th entrance E of the first ratio three-way control valve 11 is opened, and makes pressure of return water sensor
18 pressure rise；
If the pressure of pressure of return water sensor 18 is equal to setting pressure, programmable controller can be by the first ratio threeway
4th entrance E aperture of the third entrance D of regulating valve 11 and the first ratio three-way control valve 11 remains unchanged, and passes pressure of return water
The pressure of sensor 18 remains unchanged, and thus realizes the continuous control of pressure.
Beneficial effects of the present invention:
The accurate control of cylinder pressure sensor temperature is realized, there is fast response time, control feature with high accuracy.
Detailed description of the invention
Fig. 1 show schematic structural diagram of the device of the invention.
Wherein: 1 expansion tank, 111 water return pipelines, 2 magnetic double level gauges, 3 circulating pumps, 31 circulating pump water inlets, 32 follow
Ring pumps out the mouth of a river, 4 flow switches, 5 leaving water temperature sensors, 6 first-hand valves, 7 engines cylinder pressure sensor cooling water rings, 71 into
The mouth of a river, 72 water outlets, 8 second-hand's valves, 9 return water temperature sensors, 10 automatic exhaust steam valves, 11 first ratio three-way control valves, 12
Third hand valve, the outlet pipeline of 13 circulating pumps, 14 plate heat exchangers, 15 second ratio three-way control valves, 16 cooling waters water inlet hand
Valve, 17 cooling waters go out sailor's valve, 18 pressure of return water sensors, A first entrance, B second entrance, the outlet C, D third entrance, E the
Four entrances, F second outlet.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of cylinder pressure sensor constant temperature and pressure control device, including expansion tank 1, circulating pump 3, engine
Cylinder pressure sensor cooling water ring 7 and plate heat exchanger 14, wherein the circulating pump water inlet 31 on expansion tank 1 and circulating pump 3 is managed
Road connects, and 71 pipeline of water inlet of circulating pump water outlet 32 and engines cylinder pressure sensor cooling water ring 7 on circulating pump 3 connects
It connects, which is the outlet pipeline 13 of circulating pump, and flow switch 4 is disposed on the outlet pipeline 13 of the circulating pump, is gone out
Water temperature sensor 5 and first-hand valve 6, the first ratio three-way control valve 11 are equipped with third entrance D, the 4th entrance E and second
Export F, the 4th entrance E pipe of the water outlet 72 of engines cylinder pressure sensor cooling water ring 7 and the first ratio three-way control valve 11
Road connection, the second outlet F of the first ratio three-way control valve 11 are connect with the entrance pipe of plate heat exchanger 14, the first ratio three
The third entrance D of logical regulating valve 11 passes through 13 piping connection of outlet pipeline of tee pipe fitting and circulating pump；And in cylinder pressure of engines
It is disposed on the water return pipeline 111 that the water outlet 72 of sensor cooling water ring 7 is connect with the first ratio three-way control valve 11
Second-hand's valve 8, pressure of return water sensor 18, return water temperature sensor 9 and automatic exhaust steam valve 10, the second ratio three-way control valve 15
It is equipped with first entrance A, second entrance B and first outlet C, first entrance A is intake with cooling water respectively hand valve 16 and board-like to be changed
Hot 14 piping connection of device, 14 piping connection of second entrance B and plate heat exchanger, first outlet C and cooling water go out the pipe of sailor's valve 17
Road connection, while piping connection between cooling water water inlet hand valve 16 and plate heat exchanger 14；The outlet of plate heat exchanger 14 with follow
31 piping connection of ring pump water inlet mouth, is provided with third hand valve 12 between circulating pump water inlet 31 and circulating pump water outlet 32.
Pressure of return water sensor 18, the first ratio three-way control valve 11, return water temperature sensor 9 and the second ratio threeway tune
Section valve 15 is connect with programmable controller controls.
It is provided with magnetic double level gauge 2 on the expansion tank 1, for showing the liquid level in expansion drum.
Second ratio three-way control valve 15 is equipped with first entrance A, second entrance B and first outlet C, according to return water temperature
The temperature that sensor 9 detects, comes whether control loop water needs to be cooled down by plate heat exchanger 14, if actual temperature is high
In setting value, then need to cool down: programmable controller can close first entrance A, and cooling circulating water is intake hand by cooling water
Valve 16 flows into, and through plate heat exchanger 14, is flowed out by first outlet C, goes out sailor's valve 17 through cooling water and flow back to；If actual temperature is not
Higher than setting value, then do not need to cool down, programmable controller can close second entrance B, cooling circulating water by cooling water into
Sailor's valve 16 flows into, and is flowed directly out by first outlet C, goes out sailor's valve 17 through cooling water and flow back to, without plate heat exchanger 14, no
It needs to cool down；When actual temperature and close set temperature, the adjustable second ratio threeway tune of programmable controller is utilized
The position for saving 15 spool of valve, allows first entrance A, second entrance B to open, but need not be fully open, then flowed by first outlet C
Out, the continuous control of temperature is thus realized.
A kind of above-mentioned cylinder pressure sensor constant temperature and pressure control device realization cylinder pressure sensing is used present invention simultaneously provides a kind of
The accuracy control method of device temperature, the specific steps are as follows:
Step 1 checks the liquid level of expansion tank 1 before activation in order to ensure equipment normal use, see liquid level whether
1/2 or more, if the liquid level of expansion tank 1 is lower than 1/2, water-refilling operation should be first carried out, the fluid infusion on expansion tank 1 is beaten
It opens, carries out fluid infusion operation, liquid level to 1/2 to 2/3 position, fluid infusion is completed, fluid infusion is closed；
Step 2, connects the hose of engines cylinder pressure sensor cooling water ring 7, and with clamp clamping, it is ensured that and it is water-tight,
And open first-hand valve 6 and second-hand's valve 8 and cooling water water inlet hand valve 16 and cooling water go out sailor's valve 17；
First ratio three-way control valve 11 is got to fully open position manually when first used by step 3, adjusts third hand valve
12 aperture makes the pressure value 3bar of pressure of return water sensor 18；
Step 4 presses the start button on programmable controller touch screen, equipment operation, if actual temperature is higher than
Setting value then needs to cool down: programmable controller can close first entrance A, and cooling circulating water is by cooling water water inlet hand valve
16 flow into, and through plate heat exchanger 14, are flowed out by first outlet C, go out sailor's valve 17 through cooling water and flow back to；If actual temperature is not high
It in setting value, then does not need to cool down, programmable controller can close second entrance B, and cooling circulating water is intake by cooling water
Hand valve 16 flows into, and is flowed directly out by first outlet C, goes out sailor's valve 17 through cooling water and flow back to, without plate heat exchanger 14, be not required to
It cools down；When actual temperature and close set temperature, adjusted using the adjustable second ratio threeway of programmable controller
The position of 15 spool of valve can allow first entrance A, second entrance B to open, but need not be fully open, flow in first outlet C
Out, the continuous control of temperature is thus realized；
Step 5, if the pressure of pressure of return water sensor 18 is higher than setting pressure, programmable controller can be by first
The third entrance D of ratio three-way control valve 11 is opened, and the 4th entrance E of the first ratio three-way control valve 11 is closed, and makes return water pressure
The pressure reduction of force snesor 18；
If the pressure of pressure of return water sensor 18 is lower than setting pressure, programmable controller can be by the first ratio threeway
The third entrance D of regulating valve 11 is closed, and the 4th entrance E of the first ratio three-way control valve 11 is opened, and makes pressure of return water sensor
18 pressure rise；
If the pressure of pressure of return water sensor 18 is equal to setting pressure, programmable controller can be by the first ratio threeway
4th entrance E aperture of the third entrance D of regulating valve 11 and the first ratio three-way control valve 11 remains unchanged, and passes pressure of return water
The pressure of sensor 18 remains unchanged, and thus realizes the continuous control of pressure.
Programmable controller in the present embodiment is to be controlled by Siemens S7-200PLC programmable controller as core
Device realizes the accurate control of cylinder pressure sensor temperature using second level pid control algorithm；Level-one PID is to utilize the first ratio threeway
Regulating valve 11 realizes the cooling water pressure control of flows through sensor；Second level PID is added using the second ratio three-way control valve 15
Heat exchanger realizes thermostatic control.
Claims (4)
1. a kind of cylinder pressure sensor constant temperature and pressure control device, it is characterised in that including expansion tank (1), circulating pump (3), start
Machine cylinder pressure sensor cooling water ring (7) and plate heat exchanger (14), the wherein circulating pump on expansion tank (1) and circulating pump (3)
Water inlet (31) piping connection, circulating pump water outlet (32) and engines cylinder pressure sensor cooling water ring (7) on circulating pump (3)
Water inlet (71) piping connection, the pipeline be circulating pump outlet pipeline (13), on the outlet pipeline (13) of the circulating pump
Flow switch (4), leaving water temperature sensors (5) and first-hand valve (6) are disposed with, on the first ratio three-way control valve (11)
Equipped with third entrance (D), the 4th entrance (E) and second outlet (F), the water outlet of engines cylinder pressure sensor cooling water ring (7)
(72) with the 4th entrance (E) piping connection of the first ratio three-way control valve (11), the of the first ratio three-way control valve (11)
Two outlets (F) are connect with the entrance pipe of plate heat exchanger (14), and the third entrance (D) of the first ratio three-way control valve (11) is logical
Tee pipe fitting is crossed to be connected on the outlet pipeline (13) of circulating pump；And the water outlet in engines cylinder pressure sensor cooling water ring (7)
Second-hand's valve (8), return water are disposed on the water return pipeline (111) that mouth (72) is connect with the first ratio three-way control valve (11)
Pressure sensor (18), return water temperature sensor (9) and automatic exhaust steam valve (10), the second ratio three-way control valve (15) are equipped with
First entrance (A), second entrance (B) and first outlet (C), first entrance (A) respectively with cooling water water inlet hand valve (16) and plate
Formula heat exchanger (14) piping connection, second entrance (B) and plate heat exchanger (14) piping connection, first outlet (C) and cooling water
Sailor's valve (17) piping connection out, while piping connection between cooling water water inlet hand valve (16) and plate heat exchanger (14)；It is board-like
The outlet of heat exchanger (14) and circulating pump water inlet (31) piping connection, circulating pump water inlet (31) and circulating pump water outlet (32)
Between be provided with third hand valve (12).
2. a kind of cylinder pressure sensor constant temperature and pressure control device according to claim 1, it is characterised in that pressure of return water passes
Sensor (18), the first ratio three-way control valve (11), return water temperature sensor (9) and the second ratio three-way control valve (15) with
Programmable controller controls connection.
3. a kind of cylinder pressure sensor constant temperature and pressure control device according to claim 1, it is characterised in that the expansion
Magnetic double level gauge (2) are provided on water tank (1), for showing the liquid level in expansion drum.
4. being realized present invention simultaneously provides a kind of using a kind of cylinder pressure sensor constant temperature and pressure control device described in claim 1
The accuracy control method of cylinder pressure sensor temperature, the specific steps are as follows:
Whether step 1 checks the liquid level of expansion tank (1) before activation, sees liquid level 1/2 in order to ensure equipment normal use
More than, if the liquid level of expansion tank (1) is lower than 1/2, water-refilling operation should be first carried out, the fluid infusion on expansion tank (1) is beaten
It opens, carries out fluid infusion operation, liquid level to 1/2 to 2/3 position, fluid infusion is completed, fluid infusion is closed；
Step 2, opens first-hand valve (6) and second-hand's valve (8) and cooling water water inlet hand valve (16) and cooling water goes out sailor's valve
(17)；
First ratio three-way control valve (11) is got to fully open position manually when first used by step 3, adjusts third hand valve
(12) aperture makes the pressure value 3bar of pressure of return water sensor (18)；
Step 4, equipment operation, if actual temperature is higher than setting value, need to cool down: programmable controller can be by first
Entrance (A) is closed, and cooling circulating water is flowed by cooling water water inlet hand valve (16), through plate heat exchanger (14), by first outlet (C)
Outflow, goes out sailor's valve (17) through cooling water and flows back to；If actual temperature is not higher than setting value, do not need to cool down, programmable
Controller can close second entrance (B), and cooling circulating water is flowed by cooling water water inlet hand valve (16), straight by first outlet (C)
Outflow is connect, goes out sailor's valve (17) through cooling water and flows back to, without plate heat exchanger (14), do not need to cool down；When actual temperature and
It, can using the position of adjustable second ratio three-way control valve (15) spool of programmable controller when set temperature is close
To allow first entrance (A), second entrance (B) is opened, but need not be fully open, is flowed out at first outlet (C), is thus realized
The continuous control of temperature；
Step 5, if the pressure of pressure of return water sensor (18) is higher than setting pressure, programmable controller can be by the first ratio
The third entrance (D) of example three-way control valve (11) is opened, and the 4th entrance (E) of the first ratio three-way control valve (11) is closed, and is made
The pressure reduction of pressure of return water sensor (18)；
If the pressure of pressure of return water sensor (18) is lower than setting pressure, programmable controller can be by the first ratio threeway tune
The third entrance (D) for saving valve (11) is closed, and the 4th entrance (E) of the first ratio three-way control valve (11) is opened, and makes pressure of return water
The pressure rise of sensor (18)；
If the pressure of pressure of return water sensor (18) is equal to setting pressure, programmable controller can be by the first ratio threeway tune
The 4th entrance (E) aperture of the third entrance (D) and the first ratio three-way control valve (11) that save valve (11) remains unchanged, and makes return water
The pressure of pressure sensor (18) remains unchanged, and thus realizes the continuous control of pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618400.3A CN109612734B (en) | 2018-12-28 | 2018-12-28 | Constant temperature and constant pressure control device and method for cylinder pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618400.3A CN109612734B (en) | 2018-12-28 | 2018-12-28 | Constant temperature and constant pressure control device and method for cylinder pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109612734A true CN109612734A (en) | 2019-04-12 |
| CN109612734B CN109612734B (en) | 2024-03-15 |
Family
ID=66010892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811618400.3A Active CN109612734B (en) | 2018-12-28 | 2018-12-28 | Constant temperature and constant pressure control device and method for cylinder pressure sensor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224016A1 (en) * | 1992-07-21 | 1994-01-27 | Goldsaat Fritz Doering Gmbh & | Control of cooling in stores of agricultural grain or fodder - involves continuous measurements of temp. in surrounding air as well as in grain cooled by two-phase fluid circulation in air duct |
| DE102009009854A1 (en) * | 2009-02-20 | 2010-09-02 | Audi Ag | Coolant water circuit for internal-combustion engine of motor vehicle, has regulating valve provided with inlet connected with output of thermostat valve, where cross-sections of opening of inlet and another inlet are controlled |
| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN206862631U (en) * | 2017-06-12 | 2018-01-09 | 中国第一汽车股份有限公司 | A kind of constant-temperaturetest test device of engine water cold type charge air cooler |
| CN207232802U (en) * | 2017-09-29 | 2018-04-13 | 上海机动车检测认证技术研究中心有限公司 | System is tested in a kind of coolant thermostatic control |
| CN209326986U (en) * | 2018-12-28 | 2019-08-30 | 中国第一汽车股份有限公司 | A kind of cylinder pressure sensor constant temperature and pressure control device |
-
2018
- 2018-12-28 CN CN201811618400.3A patent/CN109612734B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224016A1 (en) * | 1992-07-21 | 1994-01-27 | Goldsaat Fritz Doering Gmbh & | Control of cooling in stores of agricultural grain or fodder - involves continuous measurements of temp. in surrounding air as well as in grain cooled by two-phase fluid circulation in air duct |
| DE102009009854A1 (en) * | 2009-02-20 | 2010-09-02 | Audi Ag | Coolant water circuit for internal-combustion engine of motor vehicle, has regulating valve provided with inlet connected with output of thermostat valve, where cross-sections of opening of inlet and another inlet are controlled |
| CN102817695A (en) * | 2011-11-30 | 2012-12-12 | 凯迈(洛阳)机电有限公司 | Constant temperature, constant pressure and constant flow device of cooling liquid |
| CN206862631U (en) * | 2017-06-12 | 2018-01-09 | 中国第一汽车股份有限公司 | A kind of constant-temperaturetest test device of engine water cold type charge air cooler |
| CN207232802U (en) * | 2017-09-29 | 2018-04-13 | 上海机动车检测认证技术研究中心有限公司 | System is tested in a kind of coolant thermostatic control |
| CN209326986U (en) * | 2018-12-28 | 2019-08-30 | 中国第一汽车股份有限公司 | A kind of cylinder pressure sensor constant temperature and pressure control device |
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| Publication number | Publication date |
|---|---|
| CN109612734B (en) | 2024-03-15 |
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