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Promising Delphi 1st-gen Gasoline Direct Injection Compression Ignition engine meeting ultra fuel efficient program targets

Green Car Congress

GDCI engine was significantly better than advanced production spark injection gasoline engines, and comparable to very efficient hybrid vehicle engines at their best efficiency conditions (214 g/kWh). This early work established that gasoline-like fuels with high resistance to autoignition are preferred for PPCI. Combustion stability.

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Delphi advancing Gasoline Direct-Injection Compression-Ignition engine concept; new two-stage supercharger/turbocharger boost system

Green Car Congress

At SAE World Congress next week in Detroit, Delphi Automotive will present two technical papers describing its ongoing progress with the Gasoline Direct-Injection Compression-Ignition (GDCI) engine concept. Good low-speed BMEP was predicted with maximum BMEP of 20 bar at 1800 to 2000 rpm. Source: Sellnau et al. Click to enlarge.

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SwRI D-EGR gasoline demo vehicle delivers diesel efficiency at lower cost; potential for LEV III/Tier 3 emissions

Green Car Congress

Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit. liter gasoline direct injection engine. D-EGR brake specific fuel consumption (BSFC) at 2000 rpm 2 bar BMEP dropped 14.3%

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ORNL team finds catalytic EGR reforming can decrease fuel consumption 8% in gasoline engine

Green Car Congress

In an open-access paper published in the ACS journal Energy & Fuels , they report that under an engine operating condition of 2000 rpm and brake mean effective pressure (4 bar), catalytic EGR reforming made it possible to sustain stable combustion with a volumetric equivalent of 45%–55% EGR. —Jim Szybist, ORNL. Earlier post.]

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Fiat introducing new 2-cylinder 0.9L Turbo TwinAir in 2014 MiTo mini

Green Car Congress

The gasoline engine delivers 105 hp (72 kW) at 5500 rpm and maximum torque of 145 N·m (107 lb-ft) at 2000 rpm/min, with combined cycle fuel consumption of 4.2 This is the lowest consumption of any of the gasoline or diesel MiTo engines, while power delivery and torque are the second-highest of the MiTo gasoline range.

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Transonic demonstrates supercritical gasoline operation under low load, medium load, and high speed low load conditions; simulated vehicle fuel economy of 48.8 mpg

Green Car Congress

Engineers at Transonic Combustion, a start-up developing a fuel efficient supercritical (SC) fuel injection and combustion system—Transonic Combustion, or TSCi ( earlier post )—have demonstrated the TSCi process using gasoline fuel at low load without EGR, medium load with EGR, and high speed low load with EGR.

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New Mercedes C-Class Estate offers new 1.6L diesel, diesel hybrid options; gasoline plug-in hybrid model coming

Green Car Congress

The powertrain range for the Estate, which includes diesel, gasoline and hybrid options, features a new 1.6-liter The new Estate’s gasoline and diesel engines with ECO start/stop function comply with the Euro 6 emissions standards. An overhead camshaft actuates two intake and two exhaust valves per cylinder. 300 @ 2000.

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