Valve timing mechanisms of internal combustion engines

Details Valve timing mechanisms of internal combustion engines Valve timing mechanisms of internal combustion engines

1983-09-26

1985-03-19

Lall, Parshotam S.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9027, 123 9031, F01L 134

Patent

active

045052352

ABSTRACT:
An internal combustion engine having at least one cylinder with inlet and exhaust valves operated via rocker arms by respective cams carried by a single camshaft. The camshaft is connected to its drive by an eccentric linkage, the eccentricity of which is varied by a device responsive to engine speed, and is least at high speed. As engine speed falls, increasing eccentricity results in a relative advance of inlet valve closing time and relative retardation of exhaust and inlet valve opening times but little change in the timing of exhaust valve closure. The lift of the valves may be varied also if the rocker arm axes are movably mounted.

REFERENCES:
patent: Re30381 (1980-08-01), Ries
patent: 2410411 (1946-11-01), Gregory
patent: 4019345 (1977-04-01), Fukuda
patent: 4177773 (1979-12-01), Cribbs
patent: 4332148 (1982-06-01), Maki et al.
Fabian, R. J., "Variable Camshaft Boosts Engine Efficiency", Automotive Engineering, vol. 81, No. 12, (Dec. 1973), pp. 11-13.

Affiliated with

Also associated with

Rating

Valve timing mechanisms of internal combustion engines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve timing mechanisms of internal combustion engines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve timing mechanisms of internal combustion engines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-747550