Review of the 21st Century Truck Partnership, Second Report (2012) / Chapter Skim
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8 SuperTruck Program
8 SuperTruck Program
Pages 115-124
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From page 115... ...
The third section examines in egon -- Develop and demonstrate technologies includdetail the budgets available for these projects, and the fourth ing optimized combustion, engine downsizing, elecsection looks at the SuperTruck project teams and the tech trification of auxiliary systems such as oil and water nologies that they plan to evaluate. The chapter concludes pumps, waste heat recovery, improved aerodynamics, with the committee's evaluation of the SuperTruck project hybridization, and possibly a fuel cell auxiliary power plans, goals, and overall approach.
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From page 116... ...
In general, each Project Goals team will seek to improve vehicle freight efficiency through improved powertrain efficiency, idle reduction, reduced The project goals were listed by DOE (2010b) in the aerodynamic drag, and reduced tire rolling resistance, among Funding Opportunity Announcement (FOA)
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From page 117... ...
The the current project goals, in which an engine dynamometer FOA stipulates that the vehicle efficiency improvement will demonstration is required over a simulated real-world duty require an integrated team that includes an engine manufac- cycle, and the 50 percent BTE goal is to be achieved at the turer, a truck OEM, and a trailer manufacturer, along with "highway cruise" condition. suppliers, national laboratories, universities, fleet operators, It is worth noting that the target for 50 percent BTE under and other stakeholders, to ensure maximum benefit.
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From page 118... ...
These works in a multiplicative rather than an additive fashion, a non-SuperTruck projects are in areas of technology that 20 percent improvement in engine efficiency combines with are also being explored by the SuperTruck teams, so the a 20 percent reduction in vehicle power demand to produce the required 50 percent overall fuel economy target.6 Items effort in the non-SuperTruck projects should complement the SuperTruck project efforts and help fill the technology 1 through 6, as well as 8 and 9 in Table 8-1 would directly pipeline for the SuperTruck projects. The SuperTruck proj- contribute to reduced load on the engine.
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From page 119... ...
Smart 6 × 2 tandem 7 Idle management Solid oxide fuel cell APU Fuel cell APU Hotel-loads from hybrid Cross-membersf other features TBD 8 Weight reduction Features TBD Cab and trailer composites, plastic fuel tanks, aluminum wheels/brake rotors, aluminum cross-members and driveshafts, carbon composite brake drums 9 Solar panels (Implied) Engine 10 Base engine Increased PCP, changes to In-cylinder pressure sensor Combustion feedback (PCP, friction/parasitics)
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From page 120... ...
test cell demonstration of a 50 percent BTE engine by the Waste heat recovery utilizing a Rankine cycle was end of 2011, a demonstration of the vehicle-level target at described by all three companies. Two different methods of the end of 2012, a demonstration of more than 50 percent energy utilization are being explored.
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From page 121... ...
SOURCE: Donald Stanton, Cummins, "Cummins-Peterbilt SuperTruck Program," presentation to the committee, September bitmap 9, 2010, Washington, D.C. percent BTE engine objective by June 2014.
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From page 122... ...
Given these one duty cycle can possibly represent all real-world truck considerations, the 50 percent BTE target appears to be a operations, even within a fairly narrow segment such as relatively risky, but not impossible, goal. The consensus of heavy-duty long haul.
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From page 123... ...
The plans also cover a wide range of tech- SuperTruck project integrates a wide range of technologies nologies and allow for the evaluation of technologies over into a single demonstration vehicle (engine, waste heat a range of operating conditions. One concern is that current recovery, driveline, rolling resistance, tractor and trailer aerodynamics, idle reduction, weight reduction technologies, etc.)
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From page 124... ...
Often, the implementation of new technologies in real-world applicaFinding 8-3. U nfortunately, the SuperTruck program tions yields unexpected results, and these results must be expresses vehicle efficiency targets in terms of fuel economy explored before any new technology can be considered ready rather than fuel consumption.
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