D
Select Acronyms

AWD all-wheel drive

BMEP brake mean effective pressure

BOM bill of materials

BSFC brake specific fuel consumption

CAFE corporate average fuel economy

CDPF catalyzed diesel particulate filter

CI compression ignition

CO2 carbon dioxide

CR compression ratio

CVVL continuously variable valve lift

DCP dual cam phasing

DCT dual-clutch transmission

DI direct injection

DISI direct injection spark ignition

DOC diesel oxidation catalyst

DOHC dual overhead cam

DOT U.S. Department of Transportation

DPF diesel particulate filter

DVVL discrete variable valve lift

E85 85 percent ethanol

EACC electric accessories

ECU engine control unit

EEA Energy and Environmental Analysis, Inc.

EGR exhaust gas recirculation

EPA U.S. Environmental Protection Agency

EU European Union

EVO exhaust valve opening

FAME fatty acid methyl ester

FC fuel consumption

FE fuel economy

FSS full system simulation

FTP Federal Test Procedure

FWD four-wheel drive

GDI gasoline direct injection

GHG greenhouse gas

GM General Motors Company

HC hydrocarbon

HCCI homogeneous-charge compression ignition

HEV hybrid-electric vehicle

HWFET highway fuel economy test schedule (or highway cycle)

I4 inline four-cylinder engine

IC internal combustion

ICP intake-cam phasing

IVC intake-valve closing

LBL low-viscosity lubricants

LDV light-duty vehicle

LEV low-emissions vehicle

LNT lean NOx traps

LP low pressure

LTC low-temperature combustion

LVL low-viscosity lubricant MBT maximum brake torque

MPFI multipoint fuel injection

mpg miles per gallon

MSRP manufacturer’s suggested retail price

NA North American

NESCCAF Northeast States Center for a Clean Air Future

NHTSA National Highway and Traffic Safety Administration

NOx nitrous oxides

NSC NOx storage and reduction catalyst

NRC National Research Council

NVH noise, vibration, and harshness

OBD on-board diagnostics



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OCR for page 167
D Select Acronyms AWD all-wheel drive GDI gasoline direct injection GHG greenhouse gas BMEP brake mean effective pressure GM General Motors Company BOM bill of materials BSFC brake specific fuel consumption HC hydrocarbon HCCI homogeneous-charge compression ignition CAFE corporate average fuel economy HEV hybrid-electric vehicle CDPF catalyzed diesel particulate filter HWFET highway fuel economy test schedule (or CI compression ignition highway cycle) CO2 carbon dioxide CR compression ratio I4 inline four-cylinder engine CVVL continuously variable valve lift IC internal combustion ICP intake-cam phasing DCP dual cam phasing IVC intake-valve closing DCT dual-clutch transmission DI direct injection LBL low-viscosity lubricants DISI direct injection spark ignition LDV light-duty vehicle DOC diesel oxidation catalyst LEV low-emissions vehicle DOHC dual overhead cam LNT lean NOx traps DOT U.S. Department of Transportation LP low pressure DPF diesel particulate filter LTC low-temperature combustion DVVL discrete variable valve lift LVL low-viscosity lubricant E85 85 percent ethanol MBT maximum brake torque EACC electric accessories MPFI multipoint fuel injection ECU engine control unit mpg miles per gallon EEA Energy and Environmental Analysis, Inc. MSRP manufacturer’s suggested retail price EGR exhaust gas recirculation EPA U.S. Environmental Protection Agency NA North American EU European Union NESCCAF Northeast States Center for a Clean Air Future EVO exhaust valve opening NHTSA National Highway and Traffic Safety Administration FAME fatty acid methyl ester NOx nitrous oxides FC fuel consumption NSC NOx storage and reduction catalyst FE fuel economy NRC National Research Council FSS full system simulation NVH noise, vibration, and harshness FTP Federal Test Procedure FWD four-wheel drive OBD on-board diagnostics 167

OCR for page 167
168 ASSESSMENT OF FUEL ECONOMY TECHNOLOGIES FOR LIGHT-DUTY VEHICLES OEM original equipment manufacturer SCR selective catalytic reduction OHV overhead valve SGDI stoichiometric gasoline direct injection SI spark ignition PCCI premixed charge compression ignition SOC state of charge PDA partial discrete approximation SOHC single overhead cam PFI port fuel injection SUV sport utility vehicle PGM platinum group metal PHEV plug-in hybrid electric vehicle UDDS urban dynamometer driving schedule PM particulate matter ULEV ultralow-emissions vehicle R&D research and development V6 six cylinder V engine RPE retail price equivalent VEL valve event and lift RWD rear-wheel drive VEM valve-event modulation VGT variable geometry turbochargers SAE Society of Automotive Engineers VVL variable valve lift