JP2005061394A5 - - Google Patents

Description

The size of the valve that opens at the bottom dead center and closes before the top dead center during the compression process for the intake valve of the air-fuel mixture.

  The present invention relates to an intake valve dedicated to an air-fuel mixture (air intake valve for an air-fuel mixture), {[opening in an intake process when a piston valve and a rotary valve are used in a 4-cycle gasoline engine and a 6-cycle gasoline engine, Countermeasures for valves and mouths that close after entering the compression process (1995 patent application No. 349921). The valve according to claim 1, which opens at the bottom dead center and closes before the top dead center during the compression step. }, The intake valve dedicated to the air-fuel mixture is the valve a, and the valve that opens at the bottom dead center and closes before the top dead center during the compression process is the valve b. .)

  There was no idea of the size of the valve b with respect to the valve a in the conventional (1995 patent application No. 349921).

  In the conventional engine using the valve b in (1995 patent application No. 349921), the high engine speed is higher in the cylinder (in the cylinder) during the compression process than in the low engine speed. However, there is a problem that there is a way to increase the amount of the real air-fuel mixture.

  The present invention increases the amount of the real air-fuel mixture in the cylinder at higher speeds than at low speeds, and gives an engine that emphasizes combustion efficiency at low speeds and power at high speeds. It is aimed.

  The size of the valve b is made smaller than the valve a.

Action

  By reducing the size of the valve b with respect to the valve a, the air-fuel mixture is exhausted from the valve b at the time of the low rotation, and cannot follow the exhaust from the valve b at the time of the high rotation. (Both the low rotation speed and the high rotation speed, the air-fuel mixture is exhausted from the valve b during the compression process, but the exhaust time of the valve b is shorter at the high rotation speed than at the low rotation speed. Because the valve b is smaller than the valve a and the exhaust resistance of the air-fuel mixture is greater.) The real mixing in the cylinder during the compression process is higher during high compression than during low rotation. The amount of mind increases.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples with reference to the drawings.
In FIG. 1, in order to show an embodiment of reducing the size of the valve b with respect to the valve a, a four-cycle gasoline engine using a piston valve has a valve a, an exhaust valve, and an intake process. FIG. 3 is a cross-sectional view showing the arrangement of a valve that opens at top dead center and closes at bottom dead center and valve b (hereinafter, the exhaust valve is valve c, and opens and closes at top dead center during the intake process) The valve that closes at the dead point is the valve d).

2 and 3 are longitudinal sectional views at the time of the compression process, assuming that FIG. 1 is viewed from the direction of the cross section AA.
Fig. 2 Compression process (at low rotation)
The valve a, the valve c, and the valve d are closed, and the valve b is open (the air-fuel mixture has less resistance when exhausted from the valve b and is exhausted more than during high rotation).
Fig. 3 Compression process (at high rotation)
Valve a, valve c, and valve d are closed, and valve b is open (the air-fuel mixture has a high resistance when exhausted from valve b and is exhausted less than during low rotation).

  In addition, although a diagram of the above condition of a 6-cycle gasoline engine using a piston valve is not drawn, the compression process (when the engine speed is low, high when the valve b is reduced relative to the valve a) Since the flow of the air-fuel mixture during rotation is the same, it is omitted here.

  Furthermore, the second intake step (air intake step) of the six-cycle gasoline engine using the piston valve may be performed by attaching an intake valve dedicated for air to the four-cycle gasoline engine using the piston valve.

  Further, as a countermeasure when the valve b is opened too much at the time of the compression process, the valve b is excessively expanded at the time of the expansion process and becomes resistance to rotation (at the time of the expansion process, the air pressure is excessively reduced to 1 or less. -It becomes resistance to rotating the shaft.) For a 4-cycle gasoline engine or a 6-cycle gasoline engine, the valve that opens before and closes at the bottom dead center can be attached, or a 6-cycle gasoline engine. In this case, the intake valve dedicated to air and the valve can be used together.

  However, in the invention referred to here, the size of the valve b is reduced with respect to the valve a, and the amount of the real air-fuel mixture in the cylinder during the compression process is higher during the high rotation than during the low rotation. To do more.

The invention's effect

  Since the present invention is configured as described above, the following effects can be obtained.

  Due to reducing the size of the valve b relative to the valve a, the amount of the real air-fuel mixture in the cylinder increases during the compression process at the time of the high rotation than at the time of the low rotation, and the low rotation Sometimes combustion efficiency is important, and at high speeds, power is important.

  Also, although it is not power, due to the size of the valve b being smaller than the valve a, the real air-fuel mixture in the cylinder during the compression process is higher during high compression than during low rotation. (The increase in fuel consumption leads to the diffusion of foreign substances into the air and the accumulation of harmful substances in the solvent.) The engine is also possible.

  It is a cross-sectional view which shows the Example of arrangement | positioning of the valve a, the valve c, the valve d, the valve b, and the plug of the 4-cycle gasoline engine using a piston valve (The valve a, the valve c, the valve d, and the valve b are See the description of the code.)   It is a longitudinal cross-sectional view which shows the Example at the time of the compression process assumed that FIG. 1 was seen from the direction of the cross section AA (at the time of low rotation).   It is a longitudinal cross-sectional view which shows the Example at the time of the compression process assumed that FIG. 1 was seen from the direction of the cross section AA (at the time of high rotation).

Explanation of symbols

1 Intake valve for air-fuel mixture (valve a)
2 Exhaust valve (valve c)
3 Valve that opens at the top dead center and closes at the bottom dead center during the intake process (valve d)
4 Valve that opens at the bottom dead center and closes before the top dead center during the compression process (valve b)
5 plugs
6 Vaporizer
7 Intake pipe
8 Exhaust pipe
9 Empty space (where the mixture is temporarily stagnant)
10 Piston 11 Passage (tube) from empty space to valve d
12 Passage (pipe) from valve b to empty space
Valve a Mixture intake valve Valve b Valve opening at the bottom dead center during the compression process and closing before the top dead center Valve c Exhaust valve Valve d Opening at the top dead center and closing at the bottom dead center during the intake process Valve AA Cross section

Claims (1)

  For the intake valve of the air-fuel mixture, the size of the valve that opens at the bottom dead center and closes before the top dead center during the compression process is reduced.

Images