Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1978-05-18
1979-07-24
Lazarus, Ira S.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
123105, F02D 1306
Patent
active
041619382
ABSTRACT:
A four cycle internal combustion engine having an intake valve conrtrol system adapted to automatically cause the engine to run on less than all of its cylinders during low speed conditions, while under high speed conditions allowing the previously unused cylinders to progressively come into play as greater power requirements are needed. In the illustrated engine, the intake valves for every other cylinder in the firing sequence are controlled solely by biasing springs which have sufficient strength to maintain the valve in a substantially closed condition during low speed operation, but which yield to pressures developed during high speed operation to permit full use of the cylinders as needed. The intake valves for the remaining other cylinders are cam controlled to ensure smooth idling and operation of the engine under low speed and power conditions.
REFERENCES:
patent: 1275752 (1918-08-01), Roberts
patent: 1331787 (1920-02-01), Schlatter
patent: 2528983 (1950-11-01), Weiss
patent: 3874358 (1975-04-01), Crower
patent: 4096845 (1978-06-01), Holmes
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