Title:
ENGINE REVOLUTION DETECTOR
Document Type and Number:
Japanese Patent JP2005241577
Kind Code:
A
Abstract:
To provide constitution capable of omitting a special detected body for detecting a crank angle to shorten the full length of an engine, in an engine revolution detector.
This engine revolution detector has a flywheel 2 provided in an engine crank shaft 1, a ring gear 3 provided in the flywheel 2, and a starter pinion 7 meshed with gear teeth 4a/4b of the ring gear 3 and driven by a starter motor. A magnetic sensor 5 is also provided to detect passing of the gear teeth of the ring gear 3. In the ring gear 3, the gear teeth 4b opposed to the magnetic sensor 5 when the engine crank shaft 1 is located in a prescribed rotational phase are constituted as nonmagnetic gear teeth, and residual gear teeth 4a are as magnetic gear teeth.
Inventors:
YOKOTA SHINJI
Application Number:
JP2004054673A
Publication Date:
September 08, 2005
Filing Date:
February 27, 2004
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
G01B7/30; F02D35/00; F02D45/00; G01B7/00; G01D5/245; (IPC1-7): G01B7/30; F02D35/00; G01D5/245
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara
Naomi Katsura River
Makoto Suhara
Naomi Katsura River