US 2019/0323581 A1 · CONTINUOUSLY VARIABLE TRANSMISSION

Abstract

An object of the present invention is to provide a continuously variable transmission in which a magnitude relationship between a piston area of a primary pulley and a piston area of a secondary pulley is specified. As means for achieving the object, a continuously variable transmission includes: an electric oil pump disposed in an oil path between a piston oil chamber of a primary pulley and a piston oil chamber of a secondary pulley; and a controlling portion configured to control the entry and exit of oil in the piston oil chamber of the primary pulley by the electric oil pump. A piston area of the primary pulley in the continuously variable transmission is smaller than a piston area of the secondary pulley.

Claims3

Dependent claims

A continuously variable transmission comprising:

an electric oil pump disposed in an oil path between a piston oil chamber of a primary pulley and a piston oil chamber of a secondary pulley;
and
a controlling portion configured to control entry and exit of oil in the piston oil chamber of the primary pulley by the electric oil pump, wherein
a piston area of the primary pulley is smaller than a piston area of the secondary pulley.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/461,935Filed 24 Nov 2016

Published

24 Oct 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16H 9/12
Using belts, V-belts, or ropes: engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite…
F16H 61/66259
Controlling of shifting being influenced by a signal derived from the engine and the main coupling: using electrical or electronical sensing or…
F16H 37/0846
At least one power path being a continuously variable transmission, i.e. CVT: cVT using endless flexible members
F16H 47/065
The fluid gearing being of the hydrokinetic type: the mechanical gearing comprising gearing of the friction or endless flexible member type

Continuously variable transmission

Life of this patent

Continuously variable transmission

Life of this patent

Abstract

Claims3