Balancing valve motion in an electrohydraulic camless valvetrain

Details Balancing valve motion in an electrohydraulic camless valvetrain Balancing valve motion in an electrohydraulic camless valvetrain

1995-04-05

1996-11-12

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

123 9013, F01L 902

Patent

active

055729614

ABSTRACT:
A electrohydraulic engine valve control system in a multi-valve engine wherein multiple intake (or exhaust) valves (10) in each cylinder are hydraulically controlled by a set of hydraulic valves (64, 68). Each engine valve (10) includes a valve piston (26) subjected to fluid pressure acting on surfaces at both ends with the volume (27) at one end connected to a source of high pressure fluid (40) while a volume (25) at the other end is selectively connected to a source of high pressure fluid (40) and a source of low pressure fluid (42), and disconnected from each through action of the hydraulic valves (64, 68). Each group of corresponding engine valves (10) is linked hydraulically together and can be moved in unison. Balancing springs (80) operatively engaging each valve piston (26), to account for manufacturing tolerances and other factors, by balancing the motion of the engine valves (10) while opening and closing.

REFERENCES:
patent: 3682152 (1972-08-01), Muller-Berner
patent: 3973595 (1976-08-01), Schmoll
patent: 4174687 (1979-11-01), Fuhrmann
patent: 5095858 (1992-03-01), Ascari
patent: 5110085 (1992-05-01), Iwasawa
patent: 5193495 (1993-03-01), Wood, III
patent: 5255641 (1993-10-01), Schechter
patent: 5259345 (1993-11-01), Richeson
patent: 5275136 (1994-01-01), Schechter et al.
patent: 5367990 (1994-11-01), Schechter
patent: 5373817 (1994-12-01), Schechter et al.
patent: 5375419 (1994-12-01), Wright et al.

Affiliated with

Also associated with

Rating

Balancing valve motion in an electrohydraulic camless valvetrain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Balancing valve motion in an electrohydraulic camless valvetrain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balancing valve motion in an electrohydraulic camless valvetrain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-555423