SU1206458A1 - Method of internal combustion engine operation - Google Patents

Description

one

The invention relates to mechanical engineering, in particular, engine building, namely, to the systems of operation of internal combustion engines in hydrogen-air mixtures.

The purpose of the invention is to increase the reliability of work by eliminating the return air in the intake tract.

The drawing shows a diagram of the engine that implements the proposed method.

Internal combustion engine Contains cylinder 1 with piston 2 and cylinder head 3, forming a combustion chamber 4. The cylinder head 3 is provided with an intake valve 5. An intake path 6 is connected to the combustion chamber 4, and a main line 8 is connected to zone 7 above the intake valve 5.

The proposed method is implemented as follows.

Hydrogen under pressure, which is regulated depending on the engine operation mode I, is fed through line 8 into the intake tract 6 into zone 7 above intake valve 5 in the immediate vicinity of it. When the valve 5 is closed, there is no air flow in the intake path 6, the air remaining in the path is displaced by hydrogen entering zone 7 under pressure. Hydrogen volume flow relative to air flow is considerable. Compiler V.Shilov Editor N.Dankulich Tehred L.Mikesh Proofreader L. Patay

Order 8673/34 Circulation 524Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

2064582

lichinu., for example, with 1 and about 40%. In addition, the time when the inlet valve is closed is about 65% of the cycle time. This ensures the formation of a rich hydrogen-air mixture in zone 7 above the inlet valve. In the vicinity of the intake valve 5, the concentration of hydrogen is high, and,

10, as studies have shown, exceeds 74% by volume, i.e. The hydrogen concentration in the mixture exceeds the upper flammability limit. At the initial moment of intake into chamber 4, combustion5 does not enter only rich in hydrogen, a non-flammable mixture, as a result of which the temperature of residual gases decreases, the subsequent filling and formation of a fuel-carrying mixture takes place at a gas temperature in the cylinder that does not exceed the auto-ignition temperature of hydrogen-air mixtures of stoichiometric composition, and reverse

25 flash does not occur.

Experienced conversion of hydrogen for engines VAZ-2106 and UMP-451 and their testing showed that the proposed method of organizing the working process

30 sa allows to completely eliminate reverse explosions when the engine is running on hydrogen-air mixtures that are close to stoichiometric in composition.

Claims (1)

METHOD. WORKS. ENGINE. INTERNAL COMBUSTION, which consists in the formation of a hydrogen-air mixture in the cylinder by supplying air through the inlet and hydrogen through the line to the area above the inlet valve of the cylinder head and introducing the resulting mixture into the cylinder, characterized in that, in order to increase the reliability of work by eliminating the inverse flashes in the inlet tract, a hydrogen-air mixture in the area above the inlet valve is formed with a hydrogen concentration above the upper ignition limit by continuously supplying hydrogen during the working cycle wiggler.