Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1987-07-27
1989-02-07
Freeh, William L.
Internal-combustion engines
Charge forming device
Fuel injection system
123502, 417221, F02M 4114, F02M 3706, F04B 2900
Patent
active
048024538
ABSTRACT:
A fuel injection pump of the rotary distributor type has a fluid pressure operable piston connected to a cam ring of the pump for the purpose of timing adjustment. Flow of fluid into or out of one end of the cylinder containing the piston is controlled by a valve member slidable in a bore in the piston. The valve member is pressure balanced and is positioned by means of control pistons in response to variation in fluid pressure. The piston is subject to reaction forces when the cam followeres of the pump engage the leading faces of the cam lobes and the tendency for piston movement is resisted by a ball valve. Opposite reaction forces occur when the cam followers move over the crests of the cam lobes and piston movement is resisted by restricting liquid flow from the other end of the cylinder.
REFERENCES:
patent: 3051154 (1962-08-01), Kemp
patent: 3439624 (1969-04-01), Glikin et al.
patent: 3447520 (1969-06-01), Drori
patent: 3897764 (1975-08-01), Bakti
patent: 4037573 (1977-07-01), Swift
patent: 4074667 (1978-02-01), Skinner
patent: 4610234 (1986-09-01), Sakuranaka
Freeh William L.
Lucas Industries Public Limited Company
LandOfFree
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