Scavenging system for a two-stroke-cycle engine
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsKoji Morikawa, Hideo Watanabe
Life of this patent
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Abstract
A two-stroke engine has a scavenge pump provided in an intake passage. A continuously variable transmission is operatively connected between the scavenge pump and a crankshaft of the engine for operating the scavenge pump. An actuator is provided for changing the transmission ratio of the transmission. The actuator is operated by a controller so as to control the speed of the transmission ratio in accordance with load on the engine.
Claims8
A system for scavenging for a two-stroke engine having at least one cylinder, a scavenge port, an exhaust port, an intake passage communicated with said scavenge port, an exhaust passage communicated with said exhaust port, a fuel injector, and a scavenge pump provided in said intake passage, the system comprising:
- a transmission ratio changing means operatively connecting said scavenge pump and a crankshaft of said engine for operating said scavenge pump;
- an actuator for changing the transmission ratio of said transmission;
- sensing means for detecting load on said engine and for producing a load signal;
- and
- control means responsive to said load signal for operating said actuator so as to control increasing speed of said transmission ratio in accordance with the load.
Dependencies are inferred from the claim text.