System and method for enhancing the operation of a continuously variable transmission of a work vehicle
US-9217505-B2 · Dec 22, 2015 · US
Cold start clutch for CVT transmission
US8961347B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8961347-B2 |
| Application number | US-201213449541-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2012 |
| Priority date | Apr 18, 2012 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
Official abstract text for this publication.
A continuously variable transmission (CVT) for a vehicle engine which provides enhanced cold starting and reduced wear under all conditions. The transmission includes mechanical transmission components, hydrostatic transmission components, and a clutch to decouple only the mechanical transmission components from driving engagement with the engine or other power source. Decoupling allows cold starting with significantly reduced parasitic losses. The transmission may use a hydraulic circuit to re-engage the mechanical transmission components with the input power source and full driving re-engagement of the transmission with the power source, such as an engine, after the transmission reaches a desired speed.
First claim
Opening claim text (preview).
What is claimed is: 1. A method, comprising: inputting power from an input power source via a drive shaft having a driving member of a clutch mounted thereto to only a hydrostatic transmission component of a continuously variable transmission (CVT); accelerating a variable input portion of the hydrostatic transmission component to a desired rotational speed; operating an output portion of the hydrostatic transmission component to a desired speed, wherein a mechanical transmiss…
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Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F16H47/04Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8961347B2 cover?
- A continuously variable transmission (CVT) for a vehicle engine which provides enhanced cold starting and reduced wear under all conditions. The transmission includes mechanical transmission components, hydrostatic transmission components, and a clutch to decouple only the mechanical transmission components from driving engagement with the engine or other power source. Decoupling allows cold st…
- Who is the assignee on this patent?
- Vaughn Corey, Caterpillar Inc
- What technology area does this patent fall under?
- Primary CPC classification F16H47/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).