HYDRAULIC DOUBLE CLUTCH
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United States of America Patent
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N/A
Issued Date -
Jul 31, 2008
app pub date -
Nov 9, 2007
filing date -
May 9, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A double clutch of a double clutch transmission of an engine is shown and described, and can comprise two clutch packs associated to two coaxial shafts, two clutch pistons each activating one of the clutch packs, and a hydraulic control device including a low pressure pump for lubrication and cooling of the clutch plates of the clutch packs, and a high pressure pump for activation of the clutch piston and a synchronizer. The low pressure pump and the high pressure pump can be disposed in parallel. Also, an electronic control device can control the hydraulic control system. In some embodiments, a flow switch is provided in a low engine speed range, and is adapted to combine oil flow of the low pressure pump and the high pressure pump at high pressures.
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