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US 6,305,353 B1Granted
Electronic engine speed and position apparatus for camshaft gear applications
AssigneeCummins Engine Company, Inc.
InventorsGregory A. Weber, G. Steven Antcliff, John Jerl Purcell, III
Life of this patent
Estimating the term…
Abstract
An apparatus for sensing engine speed and engine angular position. A tone wheel with a plurality of reference indicators and a position indicator is mounted to a camshaft gear. The reference and position indicators rotate past a Hall Effect sensor which generates a sensor signal suitable for use by a controller for determination of engine speed and engine angular position. Other embodiments do not include a controller.
Claims26
An apparatus comprising:
- an internal combustion engine with a camshaft gear, said camshaft gear being configured to rotate about a rotational axis during engine operation, said camshaft gear having a gearface;
- a wheel attached to the gearface of said camshaft gear, said wheel having a face in a plane perpendicular to the rotational axis, said wheel including a plurality of reference indicators located in said face, said reference indicators being of a first angular width, said wheel including a position indicator, said position indicator being of a second angular width greater than the first angular width;
- and
- a sensor mounted proximate to said engine wherein the face of said wheel rotates past said sensor.
1 more element
A system comprising:
- an internal combustion engine with a camshaft gear, said camshaft gear being configured to rotate about a rotational axis during said engine operation;
- a wheel attached to said camshaft gear, said wheel having a face, said wheel including a plurality of reference indicators located in said face, said reference indicators being of a first angular width, said wheel including a position indicator, said position indicator being of a second angular width different than the first angular width;
- a sensor located proximate to said wheel, said sensor detecting said plurality of reference indicators and said position indicator, said sensor providing a sensor signal corresponding to rotation of said wheel;
- and
- a controller operatively coupled to said engine and responsive to said sensor signal.
2 more elements
An apparatus comprising:
- an internal combustion engine with a camshaft gear, said camshaft gear being configured to rotate about a rotational axis during engine operation;
- a wheel attached to said camshaft gear, said wheel having a face, said wheel including a plurality of reference indicators, said reference indicators being of a first angular width, said wheel including a position indicator, said position indicator being of a second angular width different than the first angular width;
- and
- a sensor mounted proximate to said engine;
- wherein said wheel is attached to said camshaft gear such that said face of said wheel rotates past said sensor and said sensor provides a signal responsive to said reference indicators and said position indicator.
2 more elements
Dependencies are inferred from the claim text.