Method of controlling transmission capacity of a direct-coupling mechanism in hydraulic power transmission

Patent · Tue Oct 20 04:00:00 EDT 1987

OSTI ID:5762653

Nishikawa, M; Miyake, J; Sakurai, Y; Fukuda, Y

A method is described of controlling a direct-coupling mechanism of a hydraulic power transmission means having an input member and an output member, of an automatic transmission for an automotive vehicle. The direct-coupling mechanism is operable to mechanically engage and disengage the input member and the output member with and from each other. The automatic transmission has selector means being operatable at human will to select among operating modes in which the automotive vehicle is to be operated, wherein the transmission capacity of the direct-coupling mechanism is controlled such that the value of a first predetermined parameter indicative of an amount of relative slip between the input member and the output member lies within a predetermined reference range. The method comprises the steps of: (1) detecting the value of a second predetermined parameter indicative of one of the operating modes selected by the selector means; and (2) determining the predetermined reference range of the value of the first predetermined parameter in dependence on the detected value of the second predetermined parameter.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4700819
• OSTI ID: 5762653
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
AUTOMATION
AUTOMOBILES
CONTROL
COUPLINGS
EFFICIENCY
FLUID MECHANICS
HYDRAULICS
MACHINE PARTS
MECHANICAL EFFICIENCY
MECHANICAL TRANSMISSIONS
MECHANICS
OPERATION
VEHICLES