Vehicle transmission
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsYoshiaki Hori, Tohru Nishi, Michio Asumi
Life of this patent
Estimating the term…
Abstract
An engine crankshaft 2 and a wheel drive shaft 5 are connected through a static hydraulic infinitely variable transmission 3. The static hydraulic infinitely variable transmission 3 has a hydraulic pump 20 extending to an engine side of the transmission and a hydraulic motor 21 extending to a wheel drive shaft 5 side of the transmission and connected together using a closed hydraulic circuit. A control clutch 18 is fitted in the transmission system between the hydraulic motor 21 and the wheel drive shaft 5 so that the control clutch is disengaged when the engine is idling and when operation is suspended.
Claims17
A vehicle transmission for operatively connecting to a crankshaft of an engine and a vehicle wheel drive shaft, said transmission comprising:
- a static hydraulic infinitely variable transmission including
- a connection for connecting said transmission to said crankshaft and a connection for connecting said transmission to said vehicle wheel drive shaft,
- a hydraulic pump extending to an engine side of said transmission,
- a hydraulic motor extending to a wheel drive shaft side of said transmission, wherein said pump and said motor are connected together using a closed hydraulic circuit, and
- a control clutch arranged in said transmission on said wheel drive shaft side between said hydraulic motor and said connection for said wheel drive shaft, wherein a valve is operative to disengage said control clutch if said engine is idling and when operation of said engine is suspended.
A static hydraulic infinitely variable vehicle transmission for operatively connecting to a crankshaft of an engine and a vehicle wheel drive shaft, said transmission comprising:
- a connection for connecting said transmission to said crankshaft and a connection for connecting said transmission to said vehicle wheel drive shaft;
- a hydraulic pump extending to an engine side of said transmission;
- a hydraulic motor extending to a wheel drive shaft side of said transmission, wherein said pump and said motor are connected together using a closed hydraulic circuit;
- a control clutch arranged in said transmission on said wheel drive shaft side between said hydraulic motor and said connection for said wheel drive shaft, wherein a valve is operative to disengaged said control clutch if said engine is idling and when operation of said engine is suspended;
- and
- a cylinder block rotatably driven according to a sum of reaction torque received from said hydraulic pump and a reaction torque received from said hydraulic motor, wherein said sum is a rotational torque capable of being transmitted through said control clutch to said wheel drive shaft connection.
Dependencies are inferred from the claim text.