Internal combustion engine valve actuation system

Details Internal combustion engine valve actuation system Internal combustion engine valve actuation system

1985-11-15

1988-01-05

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9012, F01L 134

Patent

active

047168633

ABSTRACT:
A hydraulically controlled valve train system for improving performance and emission characteristics of internal combustion engines over a wide range of speed and load. A master hydraulic cylinder containing a master piston replaces the valve lifter in a conventional engine and bears against the camshaft of the engine. A slave cylinder hydraulically coupled to the master cylinder has a slave piston coupled to open an intake valve of the engine. A control cylinder is also hydraulically coupled to the hydraulic line and increases the closed volume of the hydraulic line with increasing pressure in the hydraulic line caused by forced displacement of the master piston by rotation of the camshaft. A solenoid under control of a microcomputer dynamically varies the limit of movement of the control piston, and thus of expansion of the hydraulic line volume, thereby controlling the opening and closing, timing and displacement of the intake valve. External control of the microprocessor affords complete control over the operation of the engine, eliminating the requirement for a throttled carburetor. Since the camshaft and intake valve structures of a conventional engine are maintained, the hydraulic valve actuating system can be produced for conventional engines with minimal tooling cost.

REFERENCES:
patent: 2615438 (1952-10-01), Tucker
patent: 2962013 (1960-11-01), Reggio
patent: 3727595 (1973-04-01), Links
patent: 3865088 (1975-02-01), Links
patent: 4111165 (1978-09-01), Aoyama et al.
patent: 4153016 (1979-05-01), Hausknecht
patent: 4231543 (1980-11-01), Turner et al.
patent: 4244553 (1981-01-01), Esrobosa
patent: 4484546 (1984-11-01), Burandt

Affiliated with

Also associated with

Rating

Internal combustion engine valve actuation system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2520