1. Team Hybrid  Daniel Farley  John Hoyt  Sean Frost Hoyt

2. Background Information A hybrid vehicle (HV) is a vehicle using an on-board rechargeable energy storage system and a fuelled power source for vehicle propulsion. The HV pollutes less and uses less fuel. The different propulsion power systems may have common subsystems or components. The HV provides better fuel economy than a conventional vehicle because the engine is smaller and may be run at speeds providing more efficiency. Hoyt

3. Problem Statement: Vermont Technical College would like to compete in the Dartmouth Thayer School of Engineering Formula One Hybrid Racing Competition, but we do not currently have a vehicle that meets the specifications. Farley

4. Solution Statement: To develop and construct a Hybrid propulsion system which comprises both an internal combustion engine (ICE) and an electrical storage unit and electric drive, which shall meet all electrical specifications and requirements for the 2007 Dartmouth Thayer School of Engineering Formula One Racing Competition. The Drive system may deploy the ICE and electric motor(s) in any configuration including series and parallel. This drive train system can then be adapted to a chassis developed in a separate effort. Farley

6. Hoyt Generator FB1-4001A #1 Belt connection To the ICE Hydraulic Pump ICE Internal Combustion and Clutch/Pump Subsystem (Hydraulic Drive Sub-System) Electric Clutch V+ Electric Clutch Clutch Control Signal FB1-4001A #2 Hydraulic Pump

7. Frost Generator Electric Motor FB1-4001A V+ +120 VDC Belt connection To the ICE Raptor 1200 Motor Controller Manzanita Micro PFC-20 charge controller Electrical charge accumulator Electrical Motor/Generator & Controllers Subsystem (Control Sub-System) Hydraulic Pump Frost

8. Accumulator 1 Reservoir Accumulator 2 Electric Motor Input ICE Input Check Valve 4 Port, 2 Way Electronically Controlled Valve 4 Port, 2 Way Electronically Controlled Valve Electronically Controlled Flow Valve Hydraulic Pump Hydraulic Motor Hydraulic Subsystem Overview (Hydraulic Driven Sub-System)

9. Power Splitting Device A parallel drive train allows both the ICE and electric motor to operate simultaneously or independently. Most parallel system incorporate a complex mechanical power splitting device; commonly a planetary gear set. Farley Delete this Slide

10. Hydraulic System Used as Power Splitting Device The rotational input from both the electric motor and ICE will drive hydraulic pumps to pressurize the accumulator. The hydraulic pressure will act on hydraulic motors positioned at the drive wheels to power the vehicle. Regenerative braking will allow the hydraulic motors to pressurize fluid back into the accumulator for future use. ICE Generator Electric Motor Power Split Device Axle Assembly Battery Bank High Pressure Hydraulic Motors V+ Hydraulic Pumps Low Pressure Farley

11. Modes of Operation State Diagram Standby Full Accel. Efficiency Reg. Drive OFF Full Acceleration ICE Elec. motor Accumulator Tire ICE Elec. motor Accumulator Tire Efficiency ICE Elec. motor Accumulator Tire Regular Drive

12. Personnel Assignments -Mathematical Modeling of the system (ICE, electric motor, hydraulics) Sean Frost -Test ICE motor with generator for feasibility John Hoyt -Rate the hydraulic motors and pumps needed through calculations. Dan Farley -Pricing, ordering Hydraulic parts (motors, pumps, valves, etc.)Dan Farley -Make a decision whether to use hydraulics or not (monetary & avail. restraints) John Hoyt Dan Farley Sean Frost -Address compatibility issues with electric motor and controller. John Hoyt Sean Frost -Address interfacing between ICE, generator, & electric motor. Sean Frost John Hoyt Frost

13. Speed Sensing Research into the Hall Effect has proven that Hall Effect speed sensors may need to be implemented in the system. Uses Traction control feedback from wheels Output speed feedback from ICE and electric motor Advantages Readily available No physical connection required (efficiency) Nature elements not an issue Hoyt Delete this Slide

14. Summary In order to compete in the Thayer School of Engineering Formula One Hybrid Competition, a hybrid drive-train is essential. Team Hybrid will design and construct a hybrid propulsion system that meets the required specifications. Several technical topics must be considered when designing this type of system. These topics still need to be further researched. Hoyt