Automatic transmission control apparatus

Details Automatic transmission control apparatus Automatic transmission control apparatus

2011-01-04

2011-01-04

Lorence, Richard M. (Department: 3655)

192 clutches and power-stop control

Transmission and brake

Motor vehicle

C477S093000

Reexamination Certificate

active

07861838

ABSTRACT:
An automatic transmission control apparatus is provided with a brake switch, a brake fluid pressure detecting section, a range position detecting section, a neutral control section and a prohibiting section. The brake switch is configured to output an on-signal when a brake pedal is depressed and otherwise output an off-signal. The brake fluid pressure detecting section is configured to detect a brake fluid pressure corresponding to a brake pedal depression force. The range position detecting section is configured to detect if a traveling range of an automatic transmission is selected. The neutral control section is configured to start a neutral control that puts the automatic transmission into a neutral state when the brake fluid pressure detected by the brake fluid detecting section exceeds a start threshold value while the range position detecting section detects that the traveling range is selected, and to end the neutral control when the brake fluid pressure falls below an end threshold value while the neutral control is being executed, with the start and end threshold values being set to values that are higher than the brake fluid pressure occurring when the brake switch starts outputting the on-signal. The prohibiting section is configured to prohibit the neutral control from being subsequently started again, after the neutral control has been started by the neutral control section, regardless of the brake fluid pressure detected by the brake fluid pressure detecting section until the brake switch outputs the off-signal.

REFERENCES:
patent: 6270443 (2001-08-01), Ito et al.
patent: 7134538 (2006-11-01), Hasegawa et al.
patent: 7325665 (2008-02-01), Kamishima et al.
patent: 59034050 (1984-02-01), None
patent: 05-087236 (1993-04-01), None

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