Uniform compression piston engine

Details Uniform compression piston engine Uniform compression piston engine

1977-03-09

1979-02-20

Myhre, Charles J.

Internal-combustion engines

Four-cycle

Variable clearance

123 71BA, F02B 7504

Patent

active

041400917

ABSTRACT:
This device pertains to an automatically adjustable length connecting rod, as applied to each cylinder of an internal combustion engine designed to operate at variable speed and torque outputs.
The purpose of the adjustable length connecting rod is to substantially maintain the level of compression of the fuel mixture over a wide range of speed and torque requirements by means of varying the compression ratio.
Automatic adjustment and locking of the length of the connecting rod is accomplished by means of a hydraulic cylinder within the connecting rod. Pressure is applied during a suitable portion of the intake stroke to lengthen the connecting rod. Compression stroke pressure buildup overcomes a relief valve during a suitable portion of the compression stroke to adjust the length of the connecting rod. The connecting rod length is hydraulically locked except during the two short periods of adjustment per cycle.

REFERENCES:
patent: 1539769 (1925-05-01), Paillon
patent: 1610137 (1926-12-01), Kratsch
patent: 1637245 (1927-07-01), Scully
patent: 2134995 (1938-11-01), Anderson
patent: 2248323 (1941-07-01), Anthony
patent: 2252153 (1941-08-01), Anthony

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