Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Patent
1997-06-24
2000-05-23
Louis-Jacques, Jacques H.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
701 56, 701 64, 477108, 477120, 74335, 74336R, G06G 770, B60K 4104
Patent
active
060674954
ABSTRACT:
An shift control strategy for controlling an automatic transmission based on acceleration. The shift control strategy determines a learned vehicle inertia as well as road load torque and expected torque in an upshift gear. A projected post shift acceleration is predicted based on the expected torque, road load torque and inertia of the vehicle. If vehicle speed and throttle position are within an allowable shift zone and if the predicted post shift acceleration exceeds a threshold value, the vehicle automatic transmission is allowed to upshift. The predicted post upshift acceleration value is determined as a function of a selected one of the possible downshifts and is compared to a threshold value. A downshift of the automatic transmission to the selected downshift is allowed if the post downshift acceleration value is less than the threshold value.
REFERENCES:
patent: 4875391 (1989-10-01), Leising et al.
patent: 4905545 (1990-03-01), Leising et al.
patent: 4951200 (1990-08-01), Leising et al.
patent: 5241476 (1993-08-01), Benford et al.
patent: 5245893 (1993-09-01), Koening et al.
patent: 5669580 (1997-09-01), Dourra et al.
patent: 5685801 (1997-11-01), Benford et al.
patent: 5738605 (1998-04-01), Fliearman et al.
patent: 5778331 (1998-07-01), Leising et al.
patent: 5794170 (1998-08-01), Kuroda et al.
Fliearman Steven R.
Foeller Mark R.
Potter Kenneth J.
Zeiger Dennis
Calcaterra Mark P.
Chrysler Corporation
Louis-Jacques Jacques H.
LandOfFree
Acceleration based shift strategy for an automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acceleration based shift strategy for an automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acceleration based shift strategy for an automatic transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1843540