Apparatus and method for a quick start engine and hybrid system
A vehicle includes a vehicle engine and a transmission. A first electric motor is driveably connected to the transmission. A second electric motor is driveably connected to the vehicle engine. At least one selectively engagable clutch is located between the engine and the transmission to provide slip. The at least one clutch is engaged after the engine reaches a predetermined speed differential with the transmission.
1. A vehicle comprising:
a vehicle engine;
a transmission;
a first electric motor driveably connected to the transmission;
a second electric motor driveably connected to the vehicle engine;
at least one selectively engagable clutch operable to provide slip between the engine and the transmission, wherein the engine reaches a predetermined speed differential with the transmission prior to engagement of the at least one clutch;
a main pump driven by the first electric motor when the at least one selectively engagable clutch is not engaged to provide oil pressure to at least the transmission and the at least one clutch; and
wherein the transmission is drivingly disconnected from the engine when the at least one selectively engageable clutch is disengaged.
2. The vehicle of claim 1 , further comprising a damper connected between the vehicle engine and the at least one clutch.
3. The vehicle of claim 1 , further comprising an auxiliary motor and an auxiliary pump, wherein the auxiliary motor is connected to drive the auxiliary pump to provide oil pressure to at least the transmission and the at least one clutch in addition to the main pump.
4. The vehicle of claim 1 , wherein the main pump is operable to engage and disengage the at least one clutch.
5. The vehicle of claim 1 , wherein at least one transmission clutch is packaged within the transmission with the electric motors axially between the engine and the transmission; and wherein the at least one transmission clutch is a friction launch clutch.