Engine cycles

Details Engine cycles Engine cycles

2005-03-09

2009-08-18

Huynh, Hai H (Department: 3747)

Internal-combustion engines

Convertible cycle

C123S090110

Reexamination Certificate

active

07574982

ABSTRACT:
An 8 Stroke and 4 Stroke cycle change engine where alternate ‘air only’ inductions are used under half load provided by alternate opening inlet valves operated by Electro-Magnetic, Electro-Hydraulic or other electrically controlled means and where the electronic control of the inlet valves can also open all inlet valves on all induction strokes to deliver more power in 4 stroke mode. The electronic control also allows for different inlet valve timings for each adjacent fuel/air 4 Stroke cycle and the next ‘air only’ 4 Stroke cycle. Electronic control of the inlet valve timing also allows an ‘air only’ inlet valve to open and admit air during an induction stroke when a fuel/air inlet valve also opens thus admitting a larger volume of air to give increased power in the fuel efficient alternate ‘air only’ 8 Stroke mode.

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