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US 2003/0111058 A1Published application
Redundant sensor with cylinder shutdown
AssigneeGeneral Motors Corporation
InventorDavid Stewart Mathews
Life of this patent
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Abstract
A method of providing engine timing information for an engine having a plurality of cylinders including detecting a fault for a crankshaft sensor generating engine timing information with a camshaft sensor, providing spark and fuel with the engine timing information generated by the camshaft sensor, and shutting off fuel to at least one of the cylinders.
Claims10
A method of providing engine timing information for an engine having a plurality of cylinders comprising:
- detecting a fault for a crankshaft sensor;
- generating engine timing information with a camshaft sensor;
- providing spark and fuel with the engine timing information generated by the camshaft sensor;
- and
- shutting off fuel to at least one of the cylinders.
2 more elements
An internal combustion engine comprising:
- an intake manifold for providing air to the internal combustion engine;
- a throttle plate controlling the flow of said air;
- a fuel injector introducing fuel into said air to form an air-fuel mixture;
- at least one piston for combusting said air-fuel mixture using a spark plug;
- a plurality of valves to control intake and exhaust of said at least one piston;
- a first camshaft having a plurality of lobes to actuate said exhaust valves;
- a first position sensor detecting the position of said first camshaft;
- a sprocket coupled to said first camshaft to drive said first camshaft;
- a crankshaft to drive said sprocket;
- a second position sensor detecting the position of said crankshaft;
- wherein upon the failure of said second position sensor said first position sensor provides position information for the crankshaft;
- and
- wherein said first position sensor will determine if said at least one piston is overadvanced and prevent fuel from being supplied to said at least one piston.
10 more elements
Dependencies are inferred from the claim text.