Lateral acceleration sensor breakdown detection device
First Claim
1. A lateral acceleration sensor breakdown detection device configured to carry out a breakdown determination control for determining that the lateral acceleration sensor has a breakdown when a difference between an actual lateral acceleration acting on a four wheel drive vehicle measured by the lateral acceleration sensor installed on the vehicle and an estimated lateral acceleration calculated from predetermined parameters that express a condition of the vehicle, whereinwhile the vehicle is turning, when rotation speed of an outer wheel from among left and right wheels is equal to or less than rotation speed of an inner wheel from among the left and right wheels, and when an actual lateral acceleration is less than an estimated lateral acceleration and the difference is equal to or greater than a predetermined value, the breakdown determination control is suspended.
1 Assignment
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Accused Products
Abstract
A lateral G sensor breakdown detection device configured to carry out a breakdown determination control that determines that the lateral G sensor has a breakdown when the difference between the actual lateral G acting on a four wheel drive vehicle measured by the lateral G detection sensor installed on the vehicle and the estimated lateral G estimated and calculated from predetermined parameters that express the condition of the vehicle; while the vehicle is turning when the rotation speed of the outer wheel is equal to or less than the rotation speed of the inner wheel and when the actual lateral G is less than the estimated lateral G and the difference is greater than a predetermined value, the breakdown determination control is suspended.
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Citations
7 Claims
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1. A lateral acceleration sensor breakdown detection device configured to carry out a breakdown determination control for determining that the lateral acceleration sensor has a breakdown when a difference between an actual lateral acceleration acting on a four wheel drive vehicle measured by the lateral acceleration sensor installed on the vehicle and an estimated lateral acceleration calculated from predetermined parameters that express a condition of the vehicle, wherein
while the vehicle is turning, when rotation speed of an outer wheel from among left and right wheels is equal to or less than rotation speed of an inner wheel from among the left and right wheels, and when an actual lateral acceleration is less than an estimated lateral acceleration and the difference is equal to or greater than a predetermined value, the breakdown determination control is suspended.
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4. A lateral acceleration sensor breakdown detection device configured to carry out a breakdown determination control for determining that the lateral acceleration sensor has a breakdown when a difference between an actual lateral acceleration acting on a four wheel drive vehicle measured by the lateral acceleration sensor installed on the vehicle and an estimated lateral acceleration estimated and calculated from predetermined parameters that express condition of the vehicle, wherein
when determination is made that spinning of the wheels has occurred by oversteering during the vehicle is turning in a predetermined direction, the breakdown determination control is suspended.
Specification