192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1994-06-15
1996-04-23
Lorence, Richard M.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 326, 192 33, 192 358, 192 4C, 747331, B60K 4128, F16H 4706
Patent
active
055095208
ABSTRACT:
An electrohydraulic control device for a drive train of a machine is disclosed. The drive train includes an engine, a transmission, and a torque converter having a rotating housing. The torque converter is drivingly connected between the engine and the transmission. The torque converter also includes an impeller element. An impeller clutch connects the impeller element to the rotating housing. An impeller clutch electrohydraulic valve produces fluid flow to the impeller clutch to controllably engage and disengage the impeller clutch. A torque converter speed sensor senses the output speed of the torque converter and responsively produces a torque converter speed signal. A electronic device receives the measured torque converter speed signal, determines a desired torque convertor speed signal, produces an error speed signal in response to a difference between the measured and desired torque converter speed signals, and controllably actuates the electrohydraulic valve to cause the speed error signal to approach zero.
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.
patent: 5040648 (1991-08-01), Mitchell et al.
patent: 5042314 (1991-08-01), Rytter et al.
patent: 5380257 (1995-01-01), Coffman et al.
Patent Application No. 08/037,136, Filed Mar. 25, 1993, Entitled "Electro-Hydraulic Control Device for a Drive Train of a Vehicle", Michael F. Coffman et al., Docket No. 93-157.
Evans William C.
Henderson Daniel E.
Herold Robert A.
Rytter Noel J.
Caterpillar Inc.
Lorence Richard M.
Masterson David M.
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