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DENSO Develops Exhaust Gas Temperature Sensor With Improved Temperature Detection Accuracy

Green Car Congress

DENSO Corporation has improved the temperature detection accuracy of its newly developed diesel exhaust temperature sensor. To improve the sensor’s temperature accuracy, DENSO increased the probe length to almost twice that of the conventional product and extended the sensing tip into the exhaust pipe. Click to enlarge.

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Eaton contributing several components to DOE SuperTruck II program

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The long-term objective of the project is to develop technology that can lead to cleaner, more efficient heavy-duty trucks, which haul 80% of goods in the United States and use about 28 billion gallons of fuel per year, accounting for around 22% of total transportation energy usage.

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Revised Nissan Juke offers 1.2 DIG-T turbocharged engine

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Among the changes in the new Juke are a new design at the front and rear with greater emphasis on both premium refinement and sporty design cues; a new downsized 1.2-liter Its lower weight, standard automatic Stop/Start feature and more fuel-efficient operation translates into cleaner and more economical performance. Click to enlarge.

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Study finds highly-turbocharged alcohol-fueled DISI engines could be more efficient than diesels

Green Car Congress

Use of ethanol, methanol or alcohol mixtures could be particularly attractive for heavy duty vehicles because of the need for cleaner engines than present diesel engines and a less demanding infrastructure requirement than that for light duty vehicles. More modest downsizing up to 5 liters could offer a practical solution.

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Mazdas new SKYACTIV gasoline and diesel engines are steps on the road to its Ideal Engine; focus on compression ratio

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Since this energy loss is primarily thermal in nature and can be attributed to the exhaust, cooling system, and engine and transmission surfaces, Mazda’s R&D team’s central focus is on improving the engine’s thermal efficiency cost-effectively. Extreme compression ratio rather than downsizing. Although downsizing—i.e.,

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Dearman begins on-vehicle testing of Gen 2 transport refrigeration system powered by liquid air engine; lighter, more efficient

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The Dearman liquid air engine is an innovative heat engine that uses liquid air (or liquid nitrogen) as a “fuel” and emits cold air as exhaust. After each expansion cycle the heat exchange fluid is recovered from the exhaust and reheated to ambient temperature via a heat exchanger similar to a conventional radiator. Earlier post.)

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Use of Supercritical Diesel Fuel for Improved Efficiency and Reduced Emissions

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Heat required to bring the fuel to SC states is recovered from the exhaust gas of the engine. To attenuate that risk, the researchers use a diluent such as CO 2 , H 2 O or exhaust gas. George Anitescu from Syracuse presented the work in a poster at the DEER 2009 conference in Dearbon, Michigan.

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