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Peterbilt Motors Model 320 Hydraulic Launch Assist

Peterbilt Motors Model 320 Hydraulic Launch Assist. Natural Gas Benefits. Good near term solution for lower emissions, but for only a couple years (2010) Landfill’s have the ability to produce own fuel Reduces demand for foreign oil. Peterbilt / Cummins Westport LNG Trucks.

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Peterbilt Motors Model 320 Hydraulic Launch Assist

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  1. Peterbilt MotorsModel 320 Hydraulic Launch Assist

  2. Natural Gas Benefits • Good near term solution for lower emissions, but for only a couple years (2010) • Landfill’s have the ability to produce own fuel • Reduces demand for foreign oil Peterbilt / Cummins Westport LNG Trucks

  3. Natural Gas Challenges • Lower energy density requires numerous CNG or expensive LNG tanks • Lower acceleration vs. horsepower • Extensive infrastructure for delivery • Special provisions for servicing • Higher initial procurement and maintenance cost LNG Refueling Station

  4. 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 1 2 3 4 5 6 7 Emissions Reduction Particulates (g/kWh) By 2010 Diesel Engines will be as clean as natural gas 1991 1994 2002 1998 2010 2007 NOX (g/kWh)

  5. HLA Benefits • Reduces emissions by launching the vehicle using pure hydraulic or blended power • Regenerative braking reduces brake wear • Lower maintenance cost • Reduces particulate matter emissions from brake dust. • Improved fuel economy reduces demand for foreign oil • Technology and trucks developed in Denton, Texas

  6. How does the HLA System work? Regeneration Mode During braking, the vehicle’s kinetic energy drives the pump/motor as a pump, transferring hydraulic fluid from the low pressure reservoir to the high pressure accumulator. The fluid compresses nitrogen gas in the accumulator and pressurizes the system. Launch Assist Mode During acceleration, fluid in the high pressure accumulator is metered out to drive the pump/motor as a motor. The system propels the vehicle by transmitting torque to the driveshaft.

  7. Hydraulic Launch System Reservoir Pump/Motor Transfer case 380 Horsepower 2550 Ft-lbs Torque Drive shaft Coupling Filter High-pressure accumulator

  8. Test Data • Peterbilt 320 chassis • 63,000lb ( 28.5 Tonne ) GVW • CAT C-10 315 hp engine • Allison 4560 5-speed automatic transmission • 100 feet ( 30 metres ) between stops • ABS braking system

  9. Fleet Trial • Houston Advanced Research Center • 12 Truck Fleet Evaluation • Customers • Waste Management (4) • City of Houston (2) • City of Denver, CO (1) • City of Dallas (4) • City of Denton (1)

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