Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1988-10-07
1990-04-17
Wolfe, Willis R.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9046, 123 9043, F01L 114, F01L 124
Patent
active
049170597
ABSTRACT:
A valve lash adjuster has a body generally having a bottomed cylindrical shape and formed with a high pressure chamber and with a supply hole for supplying operating oil to a cylinder portion, and a plunger assembly generally having a cylindrical shape and relatively movably fitted in a hollow portion of the body and holding a storing device for storing operating oil supplied from the outside through the body. The plunger assembly is formed with an axial hole on one side of the storing device for communicating the storing device with the high pressure chamber. On the other side of the storing device, the plunger assembly is formed with a first passageway for communicating the storing device with the exterior of the plunger assembly, and a second passageway branching off from the first passageway and opening to the outer peripheral surface of the plunger assembly at an opening portion opposed to the supply hole of the body. A valve mechanism is disposed on the plunger assembly and adapted to open to permit the operating oil in the storing device to flow into the high pressure chamber when the plunger assembly moves in a direction to protrude relative to the body, and to close to block the operating oil when the plunger assembly moves in the opposite direction relative to the body.
REFERENCES:
patent: 2908260 (1959-10-01), Bergmann
patent: 4098240 (1978-07-01), Abell, Jr.
patent: 4228771 (1980-10-01), Krieg
patent: 4387675 (1983-06-01), Hori et al.
patent: 4463714 (1984-08-01), Nakamura
patent: 4596213 (1986-06-01), Hillebrand
Lo Weilun
Nippon Seiko Kabushiki Kaisha
Wolfe Willis R.
LandOfFree
Valve lash adjuster 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 lash adjuster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve lash adjuster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1045369