Back to results
US 5,097,209 AGranted
Magnetic encoder and sensor system for internal combustion engines
AssigneeThe Torrington Company
InventorAlfred J. Santos
Life of this patent
Estimating the term…
Abstract
A high resolution sensor for internal combustion engines has symmetric and asymmetric magnetic encoders mounted on a support plate for synchronous rotation with the engine. Hall-effect sensor devices monitor the magnetic fields of the encoders and transmit signals to an Electronic Engine Control Unit. Ignition and fuel injection timing are deduced from the positions of the magnetic encoders. The encoders are magnetized on a fixture which establishes the size, strength, and location of each pole.
Claims11
A sensor system for internal combustion engines comprising:
- a first annular magnetic encoder having an array of uniformly distributed and uniformly sized magnetic poles;
- a second annular magnetic encoder having an array of non-uniformly spaced magnetic poles whereby the strength of adjacent magnetic poles is non-uniform;
- at least one rotatable support for said first and second annular magnetic encoders;
- at least one first magnetic field sensor located near the rotary path of said first annular magnetic encoder;
- and
- a second magnetic field sensor located near the rotary path of said second annular magnetic encoder.
3 more elements
Dependencies are inferred from the claim text.