Fuel vapor injector for internal combustion engine

Internal-combustion engines – Multiple piston – common nonrestrictive combustion chamber – Four-cycle

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Details

123 75B, 123139AK, F02B 2508

Patent

active

041553349

ABSTRACT:
An injector arrangement is disclosed for injecting a prevaporized fuel-air mixture into the cylinder of an internal combustion piston engine, the injector comprising an auxiliary piston and cylinder arrangement associated with each cylinder of the internal combustion engine and adapted to act as the combustion chamber for the piston and cylinder with which it is associated, as well as to inject a charge of compressed prevaporized fuel into the auxiliary cylinder acting as a combustion chamber. The compressor arrangement includes an auxiliary double acting piston disposed in the auxiliary cylinder, which cylinder is in communication with the main cylinder at its top, the auxiliary double acting piston being reciprocated by a linkage driven by the engine so as to be reciprocated at one-half the cyclical speed of the reciprocation of the main piston and cylinder. The piston moves downwardly to induct a charge of a prevaporized fuel mixture above the piston and then compress the charge upon movement of the piston upwardly, with a slotted port arrangement allowing injection of the compressed prevaporized fuel charged into the space beneath the auxiliary double acting piston upon the piston approaching the topmost extent of travel, which charge mixes with the main air supply compressed into the space beneath the auxiliary double acting piston by reciprocation of the main piston such that combustion takes place in that space. The auxiliary double acting piston acts to expel the residual exhaust gas from the combustion chamber during the exhaust stroke.

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patent: 3934562 (1976-01-01), Isaha

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