Four-stroke engine having an improved valve mechanism

Details Four-stroke engine having an improved valve mechanism Four-stroke engine having an improved valve mechanism

1991-12-02

1993-12-07

Kamen, Noah P.

Internal-combustion engines

Poppet valve operating mechanism

Plural valve trains, single actuator

123 4165, 123 417, F01L 126

Patent

active

052675360

ABSTRACT:
A four-stroke cycle engine unit for a working machine, for example, generally a valve drive mechanism for driving the exhaust and intake valves. The valve drive mechanism comprises a crank cam assembly mounted to a crank shaft of the engine unit so as to be rotated in accordance with rotation of the crank shaft, a cam gear assembly mounted on the cam shaft and meshed with the crank cam assembly, a cam assembly mounted onto the cam gear assembly so as to be rotated in accordance with rotation of the cam gear assembly, a pair of first and second lifters mounted on a lifter axis portion positioned in parallel to the crank shaft, the lifters being rocked in accordance with rotation of the cam assembly, a pair of first and second push rods lifted up and lowered in accordance with rocking motions of the first and second lifters, respectively, and a pair of first and second rocker arms operated in association with the first and second push rods. The lifter axis portion and the cam shaft are positioned in a plane including the crank and a center line of a cylinder of a piston-cylinder assembly of the engine unit. The first rocker arm is connected to the exhaust valve so as to carry out open-close operation thereof and the second rocker arm is connected to the intake valve so as to carry out open-close operation thereof.

REFERENCES:
patent: 1458223 (1923-06-01), Edwards

Affiliated with

Also associated with

Rating

Four-stroke engine having an improved valve mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Four-stroke engine having an improved valve mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four-stroke engine having an improved valve mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2009786