Drive unit with engine and retarder

Details Drive unit with engine and retarder Drive unit with engine and retarder

1995-10-06

1998-07-14

Poon, Peter M.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

B60T 1087, F01P 510

Patent

active

057790086

ABSTRACT:
A drive unit comprising an engine, a transmission, a hydrodynamic retarder comprised of a rotor impeller wheel, a stator impeller wheel and a retarder housing enclosing both. A coolant circuit having coolant also serves as a working fluid of the retarder, and a pump impeller wheel is arranged coaxially with the rotor impeller wheel of the retarder which is used to circulate the coolant. Given this configuration, the space needed by the units which perform the pumping and braking functions of the drive unit are minimized while the efficiency of the pumping and braking functions are maximized.

REFERENCES:
patent: 2790518 (1957-04-01), Wilson
patent: 2827989 (1958-03-01), Christenson
patent: 2889013 (1959-06-01), Schneider
patent: 3051273 (1962-08-01), Cordiano et al.
patent: 3124218 (1964-03-01), Montgomery
patent: 3650358 (1972-03-01), Bessiere
patent: 3720372 (1973-03-01), Jacobs

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