Hydromechanical transmission electronic control system for...

Details Hydromechanical transmission electronic control system for... Hydromechanical transmission electronic control system for...

2005-02-08

2005-02-08

Ho, Ha (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

C060S446000, C060S449000, C060S492000

Reexamination Certificate

active

06852064

ABSTRACT:
An electronic transmission control system that can achieve a transmission ratio based on the operator inputs and the current vehicle operating conditions. The transmission constantly connects the engine to the load, and the transmission ratio is only varied by a change in command from the present invention. The transmission's mechanical function is solely to vary the ratio between its input and output. In using the present invention, an operator must select an operating mode, either automatic or manual, using a two-position switch. While in the automatic mode, the present invention determines the vehicle speed by considering the position of the throttle and the operator's use of brakes. In the manual mode, the present invention further considers the operator's selection of a gear condition.

REFERENCES:
patent: 4395199 (1983-07-01), Izumi et al.
patent: 5390759 (1995-02-01), Gollner
patent: 6067795 (2000-05-01), Iino et al.
patent: 6250077 (2001-06-01), Iino et al.
patent: 6280152 (2001-08-01), Sugiura et al.
patent: 6343470 (2002-02-01), Nanri et al.
patent: 19610591 (1996-09-01), None

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