Dual fuel injection system for two stroke internal combustion en

Details Dual fuel injection system for two stroke internal combustion en Dual fuel injection system for two stroke internal combustion en

1987-10-26

1988-10-25

Myhre, Charles J.

Internal-combustion engines

Two-cycle

Rear compression

123 73B, 123 73AD, F02B 3304

Patent

active

047795816

ABSTRACT:
Disclosed herein is a two stroke internal combustion engine comprising a cylinder, a crankcase extending from the cylinder, a piston reciprocal in the cylinder and defining, with the cylinder, a variable volume combustion chamber and defining, with the crankcase, a crankcase chamber having a volume which varies inversely with respect to the volume of the combustion chamber, a transfer passage communicating, subject to piston movement, between the crankcase chamber and the combustion chamber, an air intake passage extending from the crankcase chamber and including therein a throttle valve movable between opened and closed positions to control engine speed, a reed valve located between the air intake passage and the crankcase chamber for controlling communication between the air intake passage and the crankcase chamber, a first fuel injector communicating with the transfer passage, a second fuel injector communicating with the air intake passage between the reed valve and the throttle valve, and a controller for actuating the first fuel injector to supply fuel to the transfer passage at relatively low engine speeds and for actuating the second fuel injector to supply fuel to the intake passage at relatively high engine speeds.

REFERENCES:
patent: 4216747 (1980-08-01), Noguchi et al.
patent: 4237831 (1980-12-01), Noguchi et al.
patent: 4286553 (1981-09-01), Baltz et al.
patent: 4401063 (1983-08-01), Haase
patent: 4446833 (1984-05-01), Matsushita et al.
patent: 4462346 (1984-07-01), Haman et al.
patent: 4625688 (1986-12-01), Takayasu
patent: 4671220 (1987-06-01), Inoue et al.
patent: 4700671 (1987-10-01), Matsushita

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