US 11,913,505 B2
Method and system for disengaging a clutch during engine shutdown and vehicle comprising such a system
Magnus Blanckenfiell, Hisings Kärra (SE); and Fredrik Karpenman, Västra Frölunda (SE)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Appl. No. 17/928,090
Filed by Volvo Truck Corporation, Gothenburg (SE)
PCT Filed Jun. 1, 2020, PCT No. PCT/EP2020/065118
§ 371(c)(1), (2) Date Nov. 28, 2022,
PCT Pub. No. WO2021/244729, PCT Pub. Date Dec. 9, 2021.
Prior Publication US 2023/0220888 A1, Jul. 13, 2023
Int. Cl. F16D 48/06 (2006.01)
CPC F16D 48/06 (2013.01) [F16D 2500/10412 (2013.01); F16D 2500/3067 (2013.01); F16D 2500/30808 (2013.01); F16D 2500/30816 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for controlling a clutch in a heavy vehicle comprising an internal combustion engine and an automated mechanical transmission, where the engine is running, the clutch is engaged and the transmission is in neutral, the system comprising an engine speed sensor, a transmission speed sensor, an electronic control unit adapted to receive a request to shut down the engine, to disengage the clutch of the transmission, and to shut down the engine, wherein the electronic control unit is adapted to reengage the clutch when rotation of the engine and rotation of a transmission input shaft has reached zero, and to actively slow down rotation of the transmission input shaft by the use of a brake device if a stop time for the transmission input shaft exceeds a predefined time interval.