Automatic transmission with anti creep device
An automatic transmission is described comprising: (a) a fluid coupling; (b) a mechanical transmission mechanism coupled to the fluid coupling, comprising power trains and friction engagement mechanisms. Various ones of the power trains are selectively engageable according to selective supply of actuating fluid pressure to selective ones of the friction engagement mechanisms to provide various speed stages including a lowest speed stage; and (c) a transmission control system comprising: (d) a means for producing a hydraulic pressure representative of engine output; (e) an anti creep valve for varying the actuating hydraulic fluid pressure for one of the friction engagement mechanisms which is engaged; (f) a means for inhibiting the action of the anti creep valve operating to cause the actuating hydraulic fluid pressure for one of the friction engagement mechanisms to be at its high value when the mechanical transmission mechanism is providing one of its speed stages higher than the lowest speed stage; (g) a shifting valve for switching between a pair of adjacent speed stages; (h) wherein the inhibiting means comprises a means for inhibiting the action of the anti creep valve on receiving the certain hydraulic fluid pressure.
- Assignee:
- Honda Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4691596
- OSTI ID:
- 6041577
- Country of Publication:
- United States
- Language:
- English
Similar Records
Automatic transmission with upshift smoothing valve
Automatic transmission hydraulic pressure control system with one-way fluid drain passage bypassing downshift timing subsystem
Related Subjects
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
AUTOMATION
CONTROL
CONTROL EQUIPMENT
COUPLINGS
CREEP
DESIGN
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW REGULATORS
FLUID MECHANICS
FLUIDS
FRICTION
HYDRAULIC FLUIDS
HYDRAULICS
MACHINE PARTS
MECHANICAL PROPERTIES
MECHANICAL TRANSMISSIONS
MECHANICS
OPERATION
PRESSURE CONTROL
VALVES
VELOCITY
WORKING FLUIDS