Electric Hybrid Retrofitting Of Non-Hybrid Combustion Engine Vehicles
a technology of non-hybrid combustion engine and hybrid vehicle, which is applied in the direction of machines/engines, engine starters, transportation and packaging, etc., can solve the problems of particularly tight powertrains of vehicles, limited space for new retrofit parts, and limited space for inclusion of new parts, so as to achieve a wide range of vehicle applicability
Inactive Publication Date: 2020-03-26
ELEPHANT RACING LLC
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Benefits of technology
The patent describes a system for retrofitting a hybrid drive system into a vehicle with tight space constraints. The system includes a power system, energy storage system, cooling system, vehicle control unit, and user interface device. The cooling system uses a liquid cooling system that supports high power density components. The system can be retrofitted into any vehicle configuration, including front-engine, mid-engine, rear-engine, and more. The system provides broad vehicle applicability because most vehicle powertrains have an engine connected to a transmission regardless of powertrain layout. The system also includes a gap or separation between the engine and transmission, which is minimized to not affect vehicle operation. The system can fit in existing vehicle cavities and provides hybrid retrofit capabilities to vehicles without space allowances for hybrid equipment. The system also includes a supplemental flywheel that partially or fully replaces the lost inertial mass of the removed flywheel and adds its rotational inertia to smooth ICE operation.
Problems solved by technology
A common design challenge in retrofitting vehicles is finding space for retrofit components.
Powertrains of vehicles are particularly tight and constrained and provide very little, if any, space for inclusion of new retrofit parts.
Even more challenging is fitting in hybrid drive components, such as the MGU, into a powertrain that was specifically unintended for hybrid drive and intentionally designed for combustion engine drive.
Method used
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[0049]Reference will now be made in detail to some exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings.
[0050]FIG. 1 is a diagram of a vehicle 10 before retrofitting with an electric motor drive retrofit system 100. The vehicle 10 comprises an internal combustion engine (ICE) 11, a flywheel 12, a clutch 13, a transmission 14, a driveshaft 15, axles 17 and 18, and wheels 19-22. ICE 11 includes a crankshaft 23 disposed within an engine casing 24. Transmission assembly 16 includes the transmission 14, clutch 13, and flywheel 12 disposed within a transmission case. A starter unit 26 turns on ICE 11. It is appreciated that vehicle 10 includes many more details that are intentionally omitted.
[0051]Flywheel 12, clutch 13, transmission 14, driveshaft 15, differential 16, and axles 17 and 18 form part of powertrain 27 of vehicle 10. ICE 11 converts fuel into mechanical energy in the form of torque. This torque is supplied within the powertrai...
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An electric motor drive retrofit system (EMDRS) comprises a power system, an energy storage system (ESS), a cooling system, a vehicle control unit (VCU), and a user interface device (UID). A non-hybrid combustion engine drive vehicle with tight space constraints is retrofittable with the EMDRS to provide hybrid drive functionality. The EMDRS includes a motor generator unit (MGU) coupled to a motor control unit (MCU). MCU transfers charge between the MGU and ESS. During retrofit, the MGU is coupled between a transmission and an internal combustion engine (ICE) of the vehicle without extending a powertrain length by more than five inches. In a first operating mode (adding torque), MCU supplies the MGU from the ESS to supply torque to the powertrain downstream before a transmission input. In a second operating mode (regenerative braking), the MGU removes torque from the powertrain and drives MCU to charge the ESS.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. §119 from U.S. Provisional Patent Application Ser. No. 62 / 736,920, entitled “Hybrid System For Vehicles,” filed on Sep. 26, 2018, the subject matter of which is incorporated herein by reference.TECHNICAL FIELD[0002]The described embodiments relate to electric vehicles, and more particularly to retrofitting combustion engine vehicles to hybrid form.BACKGROUND INFORMATION[0003]Vehicle manufacturers sell and provide vehicles of varying caliber, performance, and efficiency. Some vehicles have different performance or efficiency characteristics than others. Consumers often desire additional modifications to further increase the performance or efficiency of their vehicles. Aftermarket modifications that improve overall vehicle performance or efficiency are desirable.SUMMARY[0004]An electric motor drive retrofit system (EMDRS) comprises a power system, an energy storage system (ESS), a cooling ...
Claims
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IPC IPC(8): B60W10/08B60K6/485
CPCF02N11/04B60W10/08B60W10/06B60K2025/005B60W2510/244B60W20/00B60K6/485B60L2240/423B60K6/105B60W50/082B60W10/26B60K6/48B60W2540/12B60W2510/087B60W2540/10B60K2006/4825B60K6/405B60W20/19B60W2710/083Y02T10/62B60K6/26B60K6/54B60W20/10B60W2710/08B60Y2200/92B62D65/10
InventorMORELAND, CHARLES EDWARDDAVIS, WILLIAM DEAN
OwnerELEPHANT RACING LLC