Engine compression release

Details Engine compression release Engine compression release

1993-08-31

1994-12-27

Okonsky, David A.

Internal-combustion engines

Starting device

Compression relieving type

F02N 1700

Patent

active

053755707

ABSTRACT:
Apparatus and methods are provided for relieving the compression pressure while starting an internal combustion engine 10. A passage 12 communicates via end openings 22 and 22a between the compression space 13 and the exhaust region 19 in the head 20 of the engine. A spring 16 presses against one side of a piston 15 in a valve 21, holding an end portion 23 away from the opening 22 until the engine speed exceeds the cranking speed. The pressure of the engine's lubricating oil 18 on the opposite side of the piston 15 then forces the end portion 23 against the opening 22, to close the passage 12 and permit the engine to continue running with full compression.

REFERENCES:
patent: 3223076 (1965-12-01), Isoda
patent: 3339659 (1968-09-01), Isoda
patent: 3782354 (1974-01-01), Tuckey
patent: 3893440 (1975-07-01), Dooley
patent: 4018203 (1977-04-01), Legros
patent: 4200079 (1980-04-01), Darlington
patent: 4414933 (1983-11-01), Pribnow
patent: 5007391 (1991-04-01), Nomoto

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