Green Car Congress

AUGUST 2, 2009

Based on detailed model-level data for US light-duty vehicles from 1980 to 2006, a recent analysis by a UC Davis researcher found that if weight, horsepower and torque had been held at their 1980 levels, fuel economy for both passenger cars and light trucks could have increased by nearly 50% from 1980 to 2006. Knittel, 2009.

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Fuel Economy Downsizing Obama Economy 210

Green Car Congress

AUGUST 25, 2015

A higher compression ratio can be used if an engine will operate primarily at light loads, such that degraded efficiency at high loads is more than offset by improved efficiency at light loads. Davis, Asim Iqbal, Ronald A. A higher compression ratio can also be used if an engine will operate on fuel with a higher octane rating.

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Engine Fuel GM Ford 150

Green Car Congress

APRIL 29, 2009

Ford’s turbocharged, gasoline direct injection EcoBoost engines are targeted to play a significant near-term role in Ford’s efforts to reduce fuel consumption by enabling downsizing. The first application of this technology bundle in a 3.5L port fuel injected (PFI) V8 engine. Earlier post.). Development and Optimization of the Ford 3.5L

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Ford 2009 Engine Davis 199

Green Car Congress

MARCH 5, 2013

Worldwide, light-duty vehicle (LDV) fuel economy is not improving fast enough to cut average fuel use by 50% for all new cars by 2030, according to a working paper issued by the Global Fuel Economy Initiative ( GFEI ). —“International comparison of light-duty vehicle fuel economy”. Source: GFEI. Click to enlarge. Earlier post.)

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Fuel Economy Economy Fuel 2005 170

Green Car Congress

FEBRUARY 14, 2009

Bubble chart of plausible mainstream PHEV buyers’ battery requirements (light and dark gray circles) and experts’s requirements overlaid on a Ragone plot of NiMH and Li-ion batteries. Source: Ken Kurani. Click to enlarge. or below; advanced accessories; and a mild hybrid drivetrain.

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PHEV Fuel Economy San Diego Climate Change 150

Green Car Congress

JULY 17, 2015

and UC-Davis Emeritus and Catherine JJ DeMauro. He holds more than 35 patents (12 of which belong to UC Davis), has published more than 100 papers, and is an internationally recognized subject matter expert. In fact, the optimized PHEV is much more efficient as a long range liquid fuel vehicle, because the engine is downsized.

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PHEV Plug-in Renewable Energy 150