Hydraulic pump for a vehicle engine
AssigneeSaab Automobile Aktiebolag
InventorsPer-Inge Nilsson, Per-Anders Bulow
Life of this patent
Estimating the term…
Abstract
A hydraulic pump in the form of an oil pump for a vehicle engine has both its pinion, which is driven by the engine's crankshaft, and a ring-gear, which cooperates with the pinion, incorporated in an end-cover fastened to the end of the engine block. A cap is inserted in a collar on the side of the end-cover facing away from the engine and is only held in position there by means of a locking ring, which engages with a groove in the collar and presses the cap toward the engine. Outside the oil pump, a partly socket-shaped belt pulley is mounted on the crankshaft and its socket-shaped portion substantially grips the collar. Fitting and removal are thus simplified and engine overall length reduced. Simplified sealing also reduces oil leakage risks.
Claims20
A hydraulic pump for a vehicle engine, comprising:
- an engine crankshaft which defines a first rotation center;
- a pinion for being driven by the crankshaft to rotate around the first rotation center;
- a ring gear around the pinion and having a second rotation center which is displaced radially from the first rotation center, the ring gear having an interior including one side engaging the pinion for rotating the ring gear and having another side which is spaced away from the pinion;
- and
- a housing enclosing the pinion and the ring gear, the housing comprising:
- an end cover fastened to the vehicle engine, wherein the end cover is a transmission cover, and containing at least one transmission driven by the engine crankshaft;
- a collar extending away from the end cover;
- an end cap inside and supported by and centered by the collar and spaced away from the end cover;
- and
- urging means extending between the collar and the end cap for urging the end cap toward the end cover for closing the cavity within the housing, the end cap closing the housing, whereby the ring gear and the pinion are enclosed in the housing.
Dependencies are inferred from the claim text.