Engine starting strategy to avoid resonant frequency

US9109564B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9109564-B2
Application numberUS-201213545527-A
CountryUS
Kind codeB2
Filing dateJul 10, 2012
Priority dateJul 10, 2012
Publication dateAug 18, 2015
Grant dateAug 18, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A machine comprising a clutch that engages and disengages. The machine includes an engine operable at various engine speeds including a resonant frequency engine speed, and a transmission connected to the engine through the clutch. The engine applies power to the transmission when the clutch is engaged, and the engine does not apply power to the transmission when the clutch is disengaged. The machine comprises an engine starter that applies power to the engine, and an electronic control module that controls the clutch to disengage when the engine starter applies power to the engine and to engage after the engine speed exceeds the resonant frequency engine speed.

First claim

Opening claim text (preview).

We claim: 1. A machine comprising: a clutch adapted to engage and to disengage; an engine operable at various engine speeds including a resonant frequency engine speed; a transmission operatively connected to the engine through the clutch, the engine is adapted to apply power to the transmission when the clutch is engaged, and the engine is adapted to not apply power to the transmission when the clutch is disengaged; an engine starter adapted to apply power to the engine;…

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What does patent US9109564B2 cover?
A machine comprising a clutch that engages and disengages. The machine includes an engine operable at various engine speeds including a resonant frequency engine speed, and a transmission connected to the engine through the clutch. The engine applies power to the transmission when the clutch is engaged, and the engine does not apply power to the transmission when the clutch is disengaged. The m…
Who is the assignee on this patent?
O'Donnell Timothy M, Jacobson Evan E, Caterpillar Inc
What technology area does this patent fall under?
Primary CPC classification F02N11/08. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Aug 18 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).