192 clutches and power-stop control – Transmission control and clutch control – Common control
Patent
1990-11-05
1991-08-20
Herrmann, Allan D.
192 clutches and power-stop control
Transmission control and clutch control
Common control
192 357, 192 326, 192 13R, 74890, B60K 4128
Patent
active
050406485
ABSTRACT:
A vehicle such as an earthmoving wheel loader has an engine, a torque converter having an impeller element, a reactor element and a turbine element, and an input clutch connected between the engine and the impeller element. An electrohydraulic control device is provided to controllably engage the input clutch and that includes a microprocessor-based electronic control module, an actuator mechanism having a control member that is progressively movable between first, second and third positions to deliver a first electrical signal to the electronic control module, and a valve for directing fluid to the input clutch at a decreasing pressure level when the control member is moved from the first to the second positions in response to another signal from the electronic control module. The electronic control module is programmed to maintain at least a minimal pressure level to the actuating piston of the input clutch when the control member is between the second and third positions. Moreover, a service brake is increasingly engaged by a service brake mechanism in response to the control member moving between the second and third positions. Other logic functions are included to control the input clutch and a lockup clutch connected between the engine and the turbine element.
REFERENCES:
patent: 2972906 (1961-02-01), Schroeder
patent: 3181667 (1965-05-01), Lohbauer et al.
patent: 3621955 (1971-11-01), Black et al.
patent: 3680398 (1972-08-01), Schneider et al.
patent: 3805640 (1974-04-01), Schneider et al.
patent: 3820417 (1974-06-01), Allen et al.
patent: 3822771 (1974-07-01), Audiffred et al.
patent: 4194608 (1980-03-01), Usui et al.
patent: 4208925 (1980-06-01), Miller et al.
patent: 4386688 (1983-06-01), Sato et al.
patent: 4388987 (1983-06-01), Hennessey et al.
patent: 4414863 (1983-11-01), Heino
patent: 4463842 (1984-08-01), Redzinski
patent: 4699239 (1987-10-01), Ishino et al.
patent: 4734861 (1988-03-01), Bertolasi et al.
patent: 4915075 (1990-04-01), Brown
patent: 4961484 (1990-10-01), Kato et al.
Bump, deceased David W.
Coffman Michael F.
Holloway Dwight S.
Johnson Lowell E.
Marcott Tony L.
Caterpillar Inc.
Herrmann Allan D.
Lanchantin, Jr. Charles E.
Massey Ryan W.
LandOfFree
Electrohydraulic control device for a drive train of a vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrohydraulic control device for a drive train of a vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrohydraulic control device for a drive train of a vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1002329