Internal combustion engine for portable power generating equipment
First Claim
1. An internal combustion engine comprising:
- a housing;
a crankshaft mounted for rotation relative to said housing;
a camshaft mounted for rotation relative to said housing;
means for coupling said crankshaft to said camshaft so that said camshaft rotates in response to rotation of said crankshaft;
an outer gerotor at one end of said camshaft and movable with said camshaft; and
an inner gerotor rotatably mounted on said housing in operative engagement with said outer gerotor, said outer and inner gerotors forming an oil pump operable to pump oil in response to rotation of said camshaft relative to said housing.
7 Assignments
0 Petitions
Accused Products
Abstract
An internal combustion engine for portable power generating equipment includes a camshaft assembly having an integral gerotor oil pump at one end thereof. The camshaft, which is preferably formed of two dissimilar materials, is mounted for axial movement in response to increased oil pressure so as to provide automatic oil pressure regulation. Structure is provided for reducing engine compression at low speeds to reduce cranking resistance during starting. Speed control is provided by a stepper motor coupled through a cam to the engine throttle. The cam is shaped so as to counteract the non-linear relationship between throttle position and engine power and speed so as to provide a desired relationship between the position of the stepper motor and the engine power and speed.
30 Citations
11 Claims
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1. An internal combustion engine comprising:
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a housing; a crankshaft mounted for rotation relative to said housing; a camshaft mounted for rotation relative to said housing; means for coupling said crankshaft to said camshaft so that said camshaft rotates in response to rotation of said crankshaft; an outer gerotor at one end of said camshaft and movable with said camshaft; and an inner gerotor rotatably mounted on said housing in operative engagement with said outer gerotor, said outer and inner gerotors forming an oil pump operable to pump oil in response to rotation of said camshaft relative to said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification