DE2535041A1 - Water vapour admixture to combustion engine fuel mixture - uses exhaust heat to evaporate water, admits vapour downstream of carburettor - Google Patents

Abstract

Systems for combustion engines utilises the heat contained in the exhaust gas to evaporate water or an aqueous mixture and feeds the water vapour so formed to the fuel/air mixture, thereby making it possible to use lead-free or low-lead fuel in a high compression ratio engine. The system can be applied to already existing engines without major modification. The vapour may be drawn into the inlet manifold by the vacuum present therein. The water may contain chemicals which promote combustion and assist in purifying the exhaust gas. The exhaust manifold may have evaporation ducts, and may be designed so that it can replace an existing manifold.

Description

@Fuel additive system for internal combustion engines.

Explanation of the fuel additive system: the subject of this invention is a device for internal combustion engines that make it possible to use engines which can only run on super petrol, also on unleaded fuel (Gasoline) to convert, with the CO 2 and CO content of the exhaust gases at the same time is reduced.

This fuel additive system creates an environmentally friendly @ etri @@ the internal combustion engines achieved without the same in their structure worth mentioning This system is also very suitable for retrofitting older engines.

@principle of the fuel additive system: no internal combustion engines The exhaust manifold heats up very quickly due to the hot exhaust gases, that's why The exhaust manifold is also used as an evaporator for the fuel additive system For this purpose, the existing exhaust manifold on the engine must be replaced by a specially designed to be replaced.

The new exhaust manifold must have additional evaporator ducts, into which the water or water mixture is fed @ The water or water mixture fed in here evaporates in the hot evaporator ducts and becomes the intake manifold as water vapor below the carburetor. The negative pressure in the intake manifold causes the Sucked in water vapor and added as such to the gasoline-air mixture and as Gasoline-air-vapor mixture is supplied to the respective cylinder during the intake stroke During the compression stroke, the mixture is ignited and burned as usual. Intake, compression and expansion strokes are the same as any normal internal combustion engine, only The combustion process proceeds in a similar way to that of a lead-containing premium gasoline-air mixture.

The addition of steam prevents it from burning slowly Similar to the lead additive in gasoline, the harmful knocking of the engine and thus Also pre-ignition, diesel refilling when the engine is switched off no longer occurs Appearance: The CO and the CO 2 share in the exhaust gases also fall as a result These advantages can be achieved by adding chemicals to the water such as methanol and the like.

With the test car an Opel 1700 C were in the period from August 1974 to July 1975 driven over 10,000 km without any abnormal phenomena such as for example contamination of the oil by water or faster wear of the Spark plugs was detected.

It should also be noted that the fuel consumption is somewhat reduced During very fast and long-lasting test drives at 170 km / h With 10 liters of norma @ enzine up to two liters of water evaporated without problems @ occurring.

Function of the fuel additive system: When the engine is started the water pump is mechanically coupled to the engine and therefore runs synchronously P is put into operation. (Instead of the water pump, a Control valve can be used.) Fuel add-on system for internal combustion engines b The water or water mixture is then removed from the water tank in the evaporator channels of the exhaust manifold V. In the line between pump P (or in its place a control valve controlled by the gas petal) and the evaporator V is located Electrically operated solenoid valve M. This solenoid valve M serves the purpose that at the time when the evaporator has not yet reached the required evaporation temperature has, the solenoid valve M shuts off the water flow to the evaporator, only when the required evaporation temperature is present in the exhaust manifold V, this will be Solenoid valve M opened by switch S 1 on the jump starter.

Va the tarthilre by the cooling water or by the heat of the engine au is released, the switch S 1 can only be opened when the engine temperature is appropriate , whereby he opens the solenoid valve so that the water flow only when it is warm Motor can take place to the evaporator ducts.

@The water vapor mixture is reduced by the negative pressure in the intake manifold sucked in, where it is mixed with the air-gasoline mixture of the carburetor to form a steam-air-gasoline mixture is combined and processed in this way by the engine also the solenoid valve M operated by the switch S 2, which is on the throttle or attached to the pole of the same. the switch S 2 serves the purpose that In this operating state, no water mixture can get into the evaporator v, because in this case the engine could get too much water vapor and consequently none Combustion of the mixture saturated with water vapor can take place as a result the engine stops and has difficulty starting when starting.

Claims (1)

Fuel additive system for internal combustion engines: ratentansDrUche: Claim 1: Additive fuel system for internal combustion engines characterized in that the hot exhaust gases from the internal combustion engine used to evaporate water or water mixture and this water vapor the Fuel-air mixture supplies so that one f for high-compression internal combustion engines Unleaded or lead-free fuel can be used and that with this system too older engines can be retrofitted with it without any noteworthy constructive changes changes need to be made. Claim 2: fuel additive system for internal combustion engines according to claim 1, characterized in that the normal lead-free or low-lead @ enzin-air mixture below the carburetor in the intake manifold supplies water vapor which is sucked in by the negative pressure present in the intake manifold and here with the gasoline-air mixture to a water-vapor-gasoline-air mixture combined and thus serves the engine as fuel instead of the gasoline-air mixture. Claim 3: Additive fuel system for internal combustion engines according to claim 2 and 3 characterized in that the evaporation in a special Chemicals can be added to existing water containers, firstly without chemicals Damaging the engine or significantly weakening its performance the combustion promote and secondly contribute to the detoxification of the exhaust gases and thus the operation make the engine more environmentally friendly. Claim 4: Additive fuel system for internal combustion engines according to claims 1, 2 and 3 characterized in that the exhaust manifold of the engine is provided with evaporator channels, so that the exhaust manifold can function at the same time of the evaporator takes over and thus as a replacement part also for retrofitting for older motors are used. Claim 5: fuel additive system for internal combustion engines according to claim 1, 2, 3 and 4 characterized in that the drive of the fuel pump to the extent that it is exploited by replacing the old fuel pump with one wird'die receives an additional amount of water as an increase and thus as an exchange part is also used for older engines, or that the negative pressure in the intake manifold used to suck the water out of the water tank and the control by makes a special control valve, the control valve being regulated by the accelerator pedal will. Claim 6: fuel supply system for internal combustion engines according to claim 1, 2, 3, 4, and 5, characterized by the electric solenoid valve and by the switch on the throttle and the switch on the to Claim 6: Automatic start a device is created that makes it possible there @ after starting so still with a cold engine, or when driving downhill where the engine is the water supply acts as a brake, so that it is shut off in this operating state a water oversaturation cannot arise and thus subsequent starting difficulties rent.