Fuel injection system including supplemental fuel injector

Details Fuel injection system including supplemental fuel injector Fuel injection system including supplemental fuel injector

1990-10-02

1992-08-11

Dolinar, Andrew M.

Internal-combustion engines

Two-cycle

Rear compression

123, F02B 3304

Patent

active

051369907

ABSTRACT:
A fuel injection system for a two cycle crankcase compression internal combustion engine including a first injector that supplies fuel directly to the combustion chamber of the engine. An induction system is provided for inducting air into the crankcase chamber of the engine and in a multiple cylinder engine this includes a manifold having a single inlet. A throttle body having a throttle valve controls the flow of air through the inlet and a second fuel injector sprays fuel into the throttle body upstream of the throttle valve and against the throttle valve in certain positions of the throttle valve. In accordance with one disclosed embodiment of the invention, the second fuel injector supplies the fuel requirements for maximum power while the first fuel injector supplies the fuel requirements for low and mid range performance, but does not have adequate capacity to supply all of the fuel for high range performance.

REFERENCES:
patent: 4446833 (1984-05-01), Matsushita et al.
patent: 4625688 (1986-12-01), Takayasu
patent: 4671220 (1987-06-01), Inoue et al.
patent: 4700671 (1987-10-01), Matsushita
patent: 4770136 (1988-09-01), Newman
patent: 4777913 (1988-10-01), Staerlz
patent: 4779581 (1988-10-01), Maier

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