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Ricardo: achieving light-duty diesel RDE NOx compliance in urban driving is possible, at a price

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Future RDE emissions legislation and fleet average CO 2 targets represent a challenge for automakers wishing to provide cost-effective light duty diesel vehicles. The cost comparison is with respect to a Euro 5 baseline. The SIA conference was focused on clean compression-ignition engines of the future. liter diesel engine.

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Advanced Turbocharged, Direct Injected Gasoline Engines Poised to Take on Diesels in US and in Europe for Reduced Fuel Consumption and Emissions

Green Car Congress

Additionally, suggested one of the speakers, advanced SIDI (spark-ignited, direct-injection) engines can take light-duty market share back from diesels in Europe based on the same trends. Comparison of Emission Standards (g/mi). . don’t think we expect to see a large market share of light duty diesel in the short term.

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Ford Unveils Ford Fiesta for North America at Los Angeles Auto Show; 1.6L I4 with Ti-VCT Delivers Estimated 40 mpg Highway

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Fiesta features Twin Independent Variable Camshaft Timing (Ti-VCT) ( earlier post ) which allows the engine to be downsized for fuel economy while continuously optimizing camshaft phasing for throttle response, performance and flexibility. The block, cylinder head and oil pan—traditionally the heaviest engine components—are aluminum castings.

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NRC releases second report on 21st Century Truck Partnership

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In spite of efforts to reduce the fuel consumption of light-duty and heavy- duty vehicles and to develop biomass-derived fuels, petroleum will remain the primary source of light-duty and heavy-duty vehicle fuel for many years to come. Finding 3-7. Recommendation 3-7. HYBRID VEHICLES. Recommendation 4-3. Finding 8-6.

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Pinnacle 4-stroke opposed-piston SI engine shows fuel economy improvements of between 30-60% at light loads, 12-30% at medium loads over conventional

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Comparison of ISFC (@42.9 The results represent a light-load indicated efficiency improvement of 15-30% (up to 40.9%). The test engine for the paper was a 250cc single-cylinder unit with dual-camshaft-actuated reciprocating sleeve valves for induction and exhaust. Source: Pinnacle. Click to enlarge.

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Rotrak testing prototype variable drive supercharger in vehicle on dyno

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In a 2010 paper, Roger Stone, Engineering Director, Torotrak noted that conventional turbo- and supercharging technologies are more than capable of delivering the required peak power and torque levels from downsized engines but suffer from a number of. It gives the next generation of downsized powertrains ‘big-engine’ response.

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Lotus Omnivore Engine Shows Up To 10% Better Fuel Economy Than Spray-Guided GDI Engines; Achieves HCCI At Extremely Light Loads

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Comparison of fuel consumption of Omnivore, homogeneous Gasoline Direct Injection (GDI) and Spray-Guided GDI engines. The automotive industry, including Lotus Engineering, has quite rightly advocated engine downsizing for four-stroke engines. Click to enlarge. Jamie Turner, Chief Engineer of Powertrain Research at Lotus Engineering.