Crank angle detection device
AssigneeHonda Motor Co., Ltd.
InventorsToru KISAICHI, Nozomi OKADA, Satoru OKADA
Life of this patent
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Abstract
Provided is a crank angle detection device that includes an ACG rotor supported by an end of a crank shaft and configured to rotate integrally with the crank shaft, a metal-plate-made pulsar ring including a ring-shaped plate portion and a detected portion that includes a plurality of convex portions formed at an outer circumference of the ring-shaped plate portion, and being configured to rotate integrally with the ACG rotor with the ring-shaped plate portion fixed to the ACG rotor, and a magnetic sensor arranged at an outer circumference of the pulsar ring and configured to detect the detected portion. Such a crank angle detection device is capable of detecting a crank angle with high accuracy.
Claims9
A crank angle detection device, comprising:
- an ACG rotor supported by an end of a crank shaft and configured to rotate integrally with the crank shaft;
- a metal-plate-made pulsar ring having outer diameter larger than outer diameter of the ACG rotor, the pulsar ring including a ring-shaped plate portion and a detected portion that includes a plurality of convex portions formed at an outer circumference of the ring-shaped plate portion and that forms predetermined clearance between an outer circumferential face of the ACG rotor as being bent toward the outer circumferential face of the ACG rotor in an axial direction of the crank shaft, and being configured to rotate integrally with the ACG rotor with the ring-shaped plate portion fixed to a side face of the ACG rotor;
- and
- a magnetic sensor arranged at an outer circumference of the pulsar ring and configured to detect the detected portion.
Dependencies are inferred from the claim text.