Crank angle detecting system for an internal combustion engine
US4787355A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1988 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Feb 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2458
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pulse generator disk is secured to a crankshaft of an engine. The disk has notches representing a compression top dead center of each cylinder. A first magnetic pickup is provided for producing a first output signal in accordance with the notch. A rotary member is secured to a camshaft of the engine. The rotary member has projections provided at positions corresponding to respective cylinders. A second magnetic pickup is provided for producing a second output signal in accordance with the projections. A control system is provided to respond to the first output signal to produce a crank angle signal. When the first output signal does not generate at a proper timing, a crank angle signal is produced dependent on the second output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.