Piston-type internal combustion engine

Details Piston-type internal combustion engine Piston-type internal combustion engine

1975-06-10

1977-07-05

Husar, C. J.

Internal-combustion engines

Four-cycle

Variable clearance

123 48A, 123 75E, 123 9012, 123 9015, 123105, F02B 7504, F01L 134

Patent

active

040333043

ABSTRACT:
A piston-type internal combustion engine includes a variable valve timing device controlling the timing of the intake valve, and a coupling between the accelerator pedal and the variable timing device for varying the timing of the intake valve in response to the movement of the accelerator pedal, thereby controlling the quantity of the fuel mixture in the cylinder at the time of combustion. The engine also includes means for maintaining a substantially constant compression ratio in the cylinder notwithstanding variations in the engine output.
A number of embodiments are disclosed. In one embodiment, the means for maintaining a substantially constant compression ratio in the cylinder comprises an auxiliary cylinder and an auxiliary piston movable therein, the inner end of the main and auxiliary pistons communicating with each other and defining a common chamber with their respective pistons, the auxiliary piston being displaceable within its cylinder to enlarge or decrease the volume of the common chamber.

REFERENCES:
patent: 741824 (1903-10-01), Pehrsson
patent: 1307185 (1919-06-01), Claudel
patent: 1437929 (1922-12-01), Brockway
patent: 1497206 (1924-06-01), Booton
patent: 1819897 (1931-08-01), Johnson
patent: 2332280 (1943-10-01), Udale
patent: 2393749 (1946-01-01), Cadella
patent: 3369532 (1968-02-01), McIlroy

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