Method and system for controlling transmission temperature

Details Method and system for controlling transmission temperature Method and system for controlling transmission temperature

2008-04-21

2010-10-05

Wright, Dirk (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

With clutch control

Reexamination Certificate

active

07806803

ABSTRACT:
A method for controlling a transmission in a motor vehicle includes determining a temperature of a fluid in the transmission, determining whether the torque converter lockup clutch is applied, and determining an engine torque of the motor vehicle. Then, the torque converter lockup clutch is applied and the transmission is prohibited from up-shifting if the temperature of the fluid exceeds a threshold, the torque converter lockup clutch is not applied, and the engine torque exceeds a second threshold. Next, a tractive effort of the motor vehicle is determined and the torque converter lockup clutch is deactivated when the temperature of the fluid is less than a third threshold, the tractive effort is less than a fourth threshold, or the engine torque is less than the second threshold.

REFERENCES:
patent: 4449618 (1984-05-01), Suga et al.
patent: 5050717 (1991-09-01), Shibayama
patent: 5601511 (1997-02-01), Michioka
patent: 5643136 (1997-07-01), Kono et al.
patent: 5954618 (1999-09-01), Mikami et al.
patent: 6019703 (2000-02-01), Black et al.
patent: 6146309 (2000-11-01), Nishino et al.
patent: 6537178 (2003-03-01), Takizawa et al.
patent: 7258648 (2007-08-01), Smith et al.

Affiliated with

Also associated with

Rating

Method and system for controlling transmission temperature does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for controlling transmission temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for controlling transmission temperature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4173681