Variable camshaft timing system

Details Variable camshaft timing system Variable camshaft timing system

1988-06-30

1989-11-07

Kamen, Noah P.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

474900, F01L 134

Patent

active

048784613

ABSTRACT:
A variable camshaft timing system for an internal combustion engine varies the relative angular position between the intake camshaft and the exhaust camshaft by controlling the path of the timing belt means. A first belt means is interconnected at one end of the engine between the crankshaft and the exhaust camshaft. At the other end of the engine the intake camshaft and the exhaust camshaft are connected by a second belt means for rotating the intake camshaft from the rotational drive supplied via exhaust camshaft. Idler arms are positioned for controlling the path and tension in the second belt means for varying the timing of the intake camshaft relative to the exhaust camshaft. A motor means operates to position the idler arms through a positioning cam means. The motor is controlled from an electronic control unit which receives signals indicating the engine operating characteristics and through a look-up table steps the positioning cam means to pivot the idler arms to rotate the intake camshaft relative to the exhaust camshaft thereby changing the intake valve timing.

REFERENCES:
patent: 3888217 (1975-06-01), Hisserich
patent: 4576127 (1986-03-01), Doi et al.
patent: 4685429 (1987-08-01), Oyaizu
patent: 4744338 (1988-05-01), Sapienza, IV

Affiliated with

Also associated with

Rating

Variable camshaft timing 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 Variable camshaft timing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable camshaft timing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-77704