Lean-burn variable compression ratio engine

Details Lean-burn variable compression ratio engine Lean-burn variable compression ratio engine

1998-11-23

2000-10-03

Argenbright, Tony M.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

123 78R, 123 9015, 12356814, F02B 7504, F02B 4708, F01L 134

Patent

active

061258016

ABSTRACT:
The efficiency of a spark-ignition internal-combustion engine having an adjustable fuel-to-air mixture ratio is improved significantly by reducing the fuel-to-air mixture ratio and increasing compression ratio. The increase in compression ratio and the reduction in fuel-to-air mixture ratio causes the engine to operate at higher efficiency and with lower air pollution levels, and without detrimental engine knock or misfire.

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patent: 5775283 (1998-07-01), Sawai et al.
patent: 5845613 (1998-12-01), Yoshikawa
patent: 5878714 (1999-03-01), Dai et al.

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