Patent ID: 9200573
Filing Date: 2015-12-01
Classification: B60K,F02D,G01B

Abstract:
1. An accelerator apparatus comprising: a support device attachable to a vehicle chassis; a shaft supported rotatably by the support device; an operation device fixed to the shaft and rotatable to rotate the shaft integrally; a biasing device for biasing the shaft in an accelerator closing direction; a magnetism generation device for generating magnetic flux; plural magnetism detection devices for respectively outputting plural voltages varying with a change in magnetic flux density, which is caused by relative rotation against the magnetism generation device when the operation device is rotated; and an abnormality check device for checking whether a rotation angle of the operation device, which decreases when the operation device rotates in the accelerator closing direction, is abnormal based on the plural voltages outputted from the plural magnetism detection devices, wherein the plural magnetism detection devices include a first magnetism detection device and a second magnetism detection device for outputting a first output voltage and a second output voltage, respectively, based on a predetermined relational expression, which defines a relation between the first output voltage and the second output voltage when the rotation angle of the operation device is equal to or greater than a normal low limit value corresponding to a rest position of the operation device, wherein the first magnetism detection device outputs the first output voltage, which is different from the predetermined relational expression, when the rotation angle of the operation device is less than the normal low limit value, and wherein the abnormality check device determines that the rotation angle of the operation device is abnormal when a voltage difference between the first output voltage and the second output voltage is outside a predetermined range.