Internal-combustion engines – Precombustion and main combustion chambers in series – Two-cycle
Patent
1996-02-28
1997-12-23
Wolfe, Willis R.
Internal-combustion engines
Precombustion and main combustion chambers in series
Two-cycle
123276, 123305, 123 73C, F02B 1910, F02D 4134
Patent
active
056997663
ABSTRACT:
A two-cycle, direct injection, internal combustion engine provides improved performance by using a portion of energy produced by the production process to heat the engine. The engine includes a plurality of direct fuel injected cylinders and a fuel injection control system. The control system includes a sensory system which detects several operating parameters of the engine, such as, engine speed and intake air flow. An electronic control unit receives input signals from the sensory system and determines the operational condition of the engine. Based on the determined operational condition of the engine, the electronic control unit controls throttle opening degree, fuel injection amounts and timing, and ignition timing. At operating conditions below a preselected engine speed/load condition, the electronic control unit maintains a generally constant throttle opening and fuel injection amount to produce a desired air/fuel ratio. The electronic control unit controls engine speed by retarding ignition until after a minimum volume condition within the respective combustion chamber has occurred.
REFERENCES:
patent: 3937188 (1976-02-01), Wrigley
patent: 5209200 (1993-05-01), Ahern et al.
patent: 5280772 (1994-01-01), Weber et al.
patent: 5450828 (1995-09-01), Sakamoto et al.
patent: 5579736 (1996-12-01), Nakamura et al.
Sanshin Kogyo Kabushiki Kaisha
Wolfe Willis R.
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