Variable cam engine

Details Variable cam engine Variable cam engine

1991-11-26

1993-03-23

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9016, F01L 134

Patent

active

051954702

ABSTRACT:
A variable cam engine wherein each cylinder has at least one valve driven by a multiplicity of cams which give different engine torque outputs. The engine includes a decision-making device which decides change-over of the cams along with a selection of a target cam according to the engine running conditions, a cam change-over mechanism which disengages a current cam from the valve and engages the target cam instead, a measuring device to measure engine parameters having a correlation with the cam change-over, a determining device to determine that a cam change-over has occurred by comparing these parameters with previously set values, and a regulating device which regulates combustion in the corresponding cylinder according to the cam change-over determined by the determining device. The fuel supply quantity and ignition period corresponding to the cam which is actually selected are thereby regulated for each cylinder, a torque step due to the cam change-over is avoided so that the change-over takes place smoothly, and degradation of the exhaust gas composition is prevented.

REFERENCES:
patent: 4759327 (1988-07-01), Nagano et al.
patent: 4876995 (1989-10-01), Otobe et al.
patent: 4917057 (1990-04-01), Seki
patent: 4942853 (1990-07-01), Konno
patent: 4960083 (1990-10-01), Seki et al.
patent: 4962732 (1990-10-01), Inoue et al.
patent: 4996954 (1991-03-01), Seki et al.
patent: 5009203 (1991-04-01), Seki
patent: 5024191 (1991-06-01), Nagahiro et al.
patent: 5060604 (1991-10-01), Seki et al.

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