Dual displacement and expansion charge limited regenerative cam

Details Dual displacement and expansion charge limited regenerative cam Dual displacement and expansion charge limited regenerative cam

1991-01-15

1992-08-25

Okonsky, David A.

Internal-combustion engines

Multiple cylinder

Cylinders in-line

123311, 123 21, 123 9012, F02B 7526, F02B 6906, F01L 904

Patent

active

051409534

ABSTRACT:
A combination, in a supercharged expansible chamber engine having at least one cam driven piston, of a piston drive cam profile that alternately drives the piston to a higher or lower top dead center TDC position producing different expansion ratios, of a valve cam drive arrangement that shifts firing position between the two TDC positions selecting an expansion ratio, of a continously variable charge volume limiting system that controls the charge by controlling intake valve open duration eliminating throttling losses, of a control system that limits the maximum charge volume or intake displacement in accordance with the firing TDC and the supercharged pressure thereby avoiding pre-ignition firing and allowing supercharger compression to replace cylinder compression instead of adding to it, comprising:

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