Redundant sensor apparatus for determining engine speed and timi

Internal-combustion engines – Spark ignition timing control – Electronic control

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

12340618, 123617, 324174, G01M 1500

Patent

active

060190868

ABSTRACT:
An engine control system includes a speed sensor apparatus for providing signals to an engine control module (ECM) indicative of the speed and timing of an internal combustion engine. The apparatus includes a primary and a secondary Hall device affixed to one pole of a dipole magnet. Independent flexible circuits connect each of the Hall devices to an output connector adapted to receive a cable connected to the ECM. The magnet, primary and secondary sensors and primary and secondary flexible circuits are potted and encased within a sensor housing that is configured for sealed mounting to a housing surrounding the timing wheel of the engine. The outputs from the two sensors are independent of each other and are simultaneously provided to the ECM. The ECM includes means for providing the output from the primary sensor to engine control routines utilizing speed and timing information while the primary sensor is operational. Means are also provided that derive a phase difference value between the primary and secondary outputs. In the event that the primary sensor fails, the ECM modifies the secondary sensor output by the phase difference value and provides the modified output to the engine control routines. In this manner, the engine control routines are provided with a consistent and continuous speed and timing signal even when one sensor fails.

REFERENCES:
patent: 2988650 (1961-06-01), Weiss
patent: 3419798 (1968-12-01), Walton
patent: 4093917 (1978-06-01), Haenssermann
patent: 4369405 (1983-01-01), Sato et al.
patent: 4378004 (1983-03-01), Petrie
patent: 4485784 (1984-12-01), Fujii et al.
patent: 4518918 (1985-05-01), Avery
patent: 4692702 (1987-09-01), Huschelrath et al.
patent: 4737710 (1988-04-01), Van Antwerp et al.
patent: 4810967 (1989-03-01), Yokoyama et al.
patent: 4847527 (1989-07-01), Dohogne
patent: 4857842 (1989-08-01), Sturman et al.
patent: 4859941 (1989-08-01), Higgs et al.
patent: 4875011 (1989-10-01), Namiki et al.
patent: 4935698 (1990-06-01), Kawaji et al.
patent: 4941445 (1990-07-01), Deutsch
patent: 4941446 (1990-07-01), Denz et al.
patent: 5084674 (1992-01-01), Lachmann et al.
patent: 5165271 (1992-11-01), Stepper et al.
patent: 5343842 (1994-09-01), Fukui
patent: 5577485 (1996-11-01), Lindsley
patent: 5694040 (1997-12-01), Plagens
patent: 5731702 (1998-03-01), Schroeder et al.
patent: 5782210 (1998-07-01), Venturoli et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Redundant sensor apparatus for determining engine speed and timi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Redundant sensor apparatus for determining engine speed and timi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redundant sensor apparatus for determining engine speed and timi will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-930340

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.