Invention Grant
- Patent Title: Method for assisted upshifting and device for this purpose
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Application No.: US15983760Application Date: 2018-05-18
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Publication No.: US10724455B2Publication Date: 2020-07-28
- Inventor: Steffen Hirschmann , Thomas Malischewski , Dominic Hyna
- Applicant: MAN Truck & Bus AG
- Applicant Address: DE Munich
- Assignee: MAN TRUCK & BUS AG
- Current Assignee: MAN TRUCK & BUS AG
- Current Assignee Address: DE Munich
- Agency: Maginot, Moore & Beck LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6a4affa
- Main IPC: F02D41/02
- IPC: F02D41/02 ; F02D13/02 ; F16H63/50 ; F02D13/04 ; F02D41/00

Abstract:
The invention relates to a method for assisted upshifting in a gear change of a transmission connected to a combustion engine. The method comprises the initiation of an upshifting process. The method comprises the reduction of an engine speed of the combustion engine by switching to an engine-braking mode, wherein a variable valve gear, in particular a trip cam system, of the combustion engine serves for switching to the engine-braking mode. Alternatively or in addition, in the engine-braking mode a first exhaust valve of the combustion engine is at first kept closed during the compression stroke and/or during the exhaust stroke for the compression of air and is opened before reaching a top dead centre of a piston movement for decompression of the compressed air.
Public/Granted literature
- US20180334975A1 Method for Assisted Upshifting and Device for this Purpose Public/Granted day:2018-11-22
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