High compression vacuum cycle engine

Details High compression vacuum cycle engine High compression vacuum cycle engine

1980-04-23

1981-07-28

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Rod

123 9015, F01L 104, F01L 108

Patent

active

042804515

ABSTRACT:
An internal combustion engine is run at high compression ratios by always starting the compression of the charge at sub-atmospheric pressure, thus allowing high compression ratios without excessive pressure at the end of the compression stroke. Higher compression ratios allow higher expansion ratios and increased efficiency. The method is suitable for use with both spark ignition and compression ignition internal combustion engines.

REFERENCES:
patent: 1629327 (1927-05-01), Waldo
patent: 3157166 (1964-11-01), MacNeill
patent: 3986351 (1976-10-01), Woods et al.
Cadillac Shop Manual, 1958, p. 9-1.
Hot Rodding, vol. 21, No. 3, Argus Publishers Corporation, Calif., 1981, p. 5.

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