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NREL announces $18M investment in 9 new projects to advance medium- and heavy-duty natural gas vehicle technologies

Green Car Congress

The selected projects will focus on reducing the total cost of ownership of NGVs, increasing vehicle efficiency, decreasing local air pollution, and advancing technology development to increase the use of more affordable medium- and heavy-duty natural gas engines and vehicles. Cummins Inc. CNG Full Fills with a Complete Smart Fueling System.

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Concept: Downsized and Supercharged Hybrid Pneumatic Engine for 30%+ Reduction in Fuel Consumption

Green Car Congress

Schematic of downsized and supercharged four-stroke hybrid pneumatic spark injection engine. The reduction in fuel consumption is obtained mainly through enabling the effective use of a heavily downsized engine, rather than from regenerative efficiency. The engine has two intake and two exhaust valves per cylinder. Dönitz et al.

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Cummins progressing with lightweight downsized T2B2 diesel for pickup; 40% improvement in fuel economy over gasoline V8

Green Car Congress

Taking learnings from LTD and LDECC programs to utilize PCCI (pre-mixed charge compression ignition) and high charge flow operation. Exhaust system configuration. Cummins achieved its weight-neutral goal based on a gasoline engine with emission control system (ECS) weight of 514 lbs (233 kg); the new aluminum 2.8L

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Westport unveils proprietary enhanced spark-ignited natural gas system; up to 10% improvement in power and torque over diesel

Green Car Congress

unveiled the first generation of its new, proprietary enhanced spark-ignited (ESI) natural gas system. Using 100% dedicated natural gas as fuel, Westport’s new technology optimizes the combustion and thermal efficiencies of the engine by taking advantages of the positive properties of natural gas. mono-fuel gas engine.

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Pierburg GmbH electric compressor for turbos

Green Car Congress

Pierburg GmbH, part of the KSPG Group, has developed an electric compressor for spontaneously boosting the charge pressure of engines fitted with an exhaust-gas turbocharger. This component allows pressure to be increased regardless of the exhaust-gas energy availability.

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Eaton contributing several components to DOE SuperTruck II program

Green Car Congress

Fuel economy and emissions regulations are driving engine downsizing and down speeding in commercial vehicles, which is resulting in the need for higher braking efficiency to maintain braking effectiveness at lower speeds.

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Review of research suggests inconclusive support for fuel consumption benefits of catalyzed EGR

Green Car Congress

Conflicting evidence does not support making a firm conclusion on the fuel consumption benefit of catalysed Exhaust Gas Recirculation (EGR), according to a review of current studies by a team at the University of Bath (UK). —Parsons et al.

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