1. Thank You Sponsors

2. Thank You Sponsors Problem Statement Identification of Critical Subsystems Identification of Vehicle States Analysis of Vehicle States Mechanical Subsystems Electrical Subsystems Mechanical Subsystem Interfaces Test Plan Update Budget Update

3. The RIT Baja Team has expressed an interest in improving drivetrain efficiency and dynamic control. The drivetrain has not had a significant format change since the 90’s, using a single speed reduction box coupled with a CVT. While this has been and continues to be an effective means of transmitting power to the wheels, and is the preferred solution amongst the top performing teams, the team would like to explore other options; specifically a gas-electric design. The team would like to receive a working bench top prototype of the drive system for the purpose of testing the gas electric system to compare it to the existing system.

5.  Engine and Alternator Mounting  CR 3, 5  ER 5, 15, 19  DR 18, 19  Wheel and Traction Motor Mounting  CR 5, 6  ER 12, 14, 17, 19  DR 20

6.  Controller  Engine System  Motor System  Accumulator System  Temperature  User Input

7.  CR 1, 2, 4, 5  ER 9, 10, 11, 12  DR 16, 17

8.  CR 2, 4, 6, 13  ER 11, 12, 17  DR 1 - 7

9.  CR 10, 13, 14  ER 5, 13, 14, 16

10.  CR 15  ER 6, 7  DR 14, 15

11.  CR 1, 2, 4, 11, 13, 16  ER 5, 8, 9, 10, 13, 14, 21  DR 16, 17

13.  Acceleration / Sled Pull / Mud Bog / Hill Climb  Taxi  Full Throttle/Accelerating  Braking  Maneuverability / S+T / Rock Crawl  Taxi  Acceleration  Braking  Cornering  Endurance  Taxi  Acceleration  Braking  Cornering  Constant Speed

14.  Vehicle at Rest  Engine Off  Engine On  Cap bank full  Cap bank not full  Vehicle in Motion  *** Cap bank full/not full applies to all  Accelerating/Full Throttle  Coasting  Braking  Constant Speed  Taxi

15.  Mechanical  System loading at a minimum  Electrical  No electrical power flow

16.  Mechanical  System loading at a minimum  Electrical  Alternator power in control closed  Power available for motor controller

17.  Mechanical  System loading at a minimum  Electrical  Alternator power in control open

18.  Mechanical  Maximum drive torque developed  Full tractive load  Electrical  All power is flowed to the motor controller  As voltage of system drops capacitor bank releases extra energy slowing the voltage fall

19.  Mechanical  Driveline in motion, but minimum loading  Electrical

20.  Mechanical  Driveline in motion, but minimum loading  Electrical  Regen power used to charge cap bank

21.  Mechanical  Maximum drive torque developed  Full tractive load  Electrical

22.  Mechanical  Maximum drive torque developed  Full tractive load  Electrical  Accumulator in charge state

23.  Mechanical  Intermediate drive torque developed  Intermediate tractive load  Electrical  Alternator supplies all necessary power to drive motor (engine may be revved down to conserve gas)

24.  Mechanical  Intermediate drive torque developed  Intermediate tractive load  Electrical  Extra power diverted to cap bank charging

31. Accumulator Steadily ChargingAccumulator Steadily Discharging

32. High-side driver applied to accumulator system circuitry

33. Accumulator software flow diagram

36. BeltChainGearDirect Efficiency-1-2o3o4 Multi-Alternator Compatible+3+3+3o1 Simplicity (1)-2-3-1o4 Simplicity (2)+3.5+ +2o1 Weight-2-3-1o4 Step-up/down+3+3+3o1 Alignment Precision Required+3.5+ -1o2 Cost ($)-2.5- -1o4 Time to develop-2.5o -1o4 Total: 1 alternator(s)-316.5-219.5-411o23 Total: 2 alternator(s)o21+12315021

37. PnuematicServoSolenoid Cost ($)-1o2.5o Variable Position-1.5o3- Weight-1o2.5o Complexity of Control+2.5o1+ Complexity of Linkageo2.5o -1 Electrical Power Draw (neg)+3o2o1 Resource limit-1o2.5o Actuation Speed+2.5o1+ Total: 1 alternator(s)15o17o16

40. Mechanical Test Plan  Traction motor selection  Receive torque information for RR selection  Begin cart design  Begin Sub frame design  Concept motor cooling  Reduction ratio range selection Electrical Test Plan  Select microprocessor  Begin controller board layout  Concept motor cooling control  Continue software development  Continue development of accumulator control circuitry  Test:  Accumulator control circuitry  Encoder inputs  Servo control and power  Update bill of materials

42. FigureCustomer requirements

43. FigureEngineering requirements

44. FigureDeveloped requirements