Variable cam engine

Details Variable cam engine Variable cam engine

1991-11-01

1992-10-06

Cross, E. Rollins

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123 9016, F02D 900, F01L 134

Patent

active

051522675

ABSTRACT:
A variable cam engine with a valve driven by cams which rotate in synchronism with the engine revolution comprises a power cam which provide large torque, an economy cam which provides good fuel cost performance, a setting device to set a cam change-over region according to an engine running condition, and a cam change-over mechanism which changes over from one cam to another at the set change-over regions and transmits the motion of the cam selected by the change-over to the valve. It further comprises a device to correct the throttle opening such that the torque generated before and after making a cam change-over is the same. It may further comprise a device to retard the engine ignition period at the same time as the throttle opening is corrected when the cam change-over is made. This arrangement prevents the occurrence of a torque step when a change-over is made from the power cam to the economy cam and vice versa, and prevents shock or impairment of exhaust gas composition due to the cam change-over.

REFERENCES:
patent: 4581924 (1986-04-01), Otobe et al.
patent: 4887561 (1989-12-01), Kishi
patent: 4899701 (1990-02-01), Inoue et al.
patent: 4926823 (1990-05-01), Kishi et al.

Affiliated with

Also associated with

Rating

Variable cam engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable cam engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable cam engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1182946