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XR3 Hybrid
- 1. XR3 SUPER-MILEAGE THREE-WHEELHYBRID Plug-In Hybrid 40 mi Battery Range 125 MPG on Diesel Power 75 – 80 MPH Two Passenger
- 2. PREDESSORS UrbaCar 1974Urba Electric 1977 Trimuter 1980 Tri-Magnum 1983 A Few 650 lb Curb Weight 60 mpg 60 mph Constant-Speed Motor Speed Controlled by CVT 850 lb Curb Weight 55 mpg 65 mph Motorcycle Power Train 1250 lb Curb Weight 45-50 mpg 100+ mph
- 3. EARLY CONCEPT RENDERINGSHigh-Performance Orientation Tilting Suspension Single-Occupant Motorcycle Power Train Fair-Weather Sports Car A blend of motorcycle and automotive styling cues create a conceptually different product
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- 5. CHASSIS LAYOUT ElectricDrive & Suspension Tunnel Frame ICE Drive & Suspension Clutch Motor Two-Stage Timing Belt Drive Kubota 23 hp Diesel Engine Four Li-Ion Batteries in Front & Two in Tunnel Air Spring at Each Wheel Urethane Mount 4 Places Front & Rear of Tunnel Parallel Hybrid Architecture Electric & ICE Power Systems Decoupled Within the Vehicle Designed to Maximize Power Train Options
- 6. ICE DRIVE &FRONT SUSPENSION Mounting Hard-Points (4 places) Kubota D902 Diesel Engine Stabilizer Bar also Serves as Locator Link For Lower Control Arms Air Spring Inflation Pressure Controls Ride Height & Accounts for Vehicles Having Weight Suspension Air Reservoir Shifter (Mounts to Tunnel Inside Cabin) Throttle/Mode Integrator
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- 8. TUNNEL FRAME 3Gallon Fuel Tank Li-Ion Battery (2) Bolt to Front Sub-Frame Using Urethane Vibration Isolator (4 places) Sheet Metal Skin Route Fuel Filler Through Here Rectangular Steel Frame
- 9. ELECTRIC DRIVE &SUSPENSION Trailing Arm Pivots on Jackshaft Axis Air Spring Varying Air Pressure Accounts for Weight of Different Power System Configurations Trailing Arm Internally Trussed Urethane Vibration Isolator 4 Places Motor Frame is a Structural Element of Rear Housing
- 10. ELECTRIC DRIVE Tightpackaging allows the motor to serve as a structural element. INTEGRATOR/MODE CONTROL
- 11. FOAM CORE COMPOSITEBODY STEP 1: Build Foam Body STEP 2: Fiberglass Over to Create a Foam Core Composite STEP 3: Smooth & Level With Body Filler
- 12. XR3 HYBRID 125– 225 MPG 40 MI BATTERY-ONLY RANGE
Editor's Notes
- #2 The slide shows the recently completed prototype of the XR3 – a self-financed in-house project. I’ll give a proper introduction of team members at the end. But briefly, I am the design team, Melissa Beckner did much of the SolidWorks modeling and layout for the manual, and Bill Beckner comprised half of the prototyping team. My wife, Galiya, did much of the image-setting for the manual, and as you’ll see later on, she filled in as a photographic model. The XR3 is a parallel hybrid using Li-Ion batteries and a 23 hp, three cylinder diesel engine. The diesel engine drives the two front wheels through a VW Beetle Type One transmission. And the electric motor drives the single rear wheel through a two-stage timing belt drive. So it’s an all-wheel-drive vehicle. I say “vehicle” because according to the Federal Uniform Vehicle Code, a three-wheel vehicle is a motorcycle. If it had four wheels, then I’d be calling it a “car.” Tonight I’ll provide a little background on the vehicle – why it exists – and I’ll give a technical overview. Feel free to ask questions, but I will leave time for questions at the end of the presentation.