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New split-cycle concept to control diesel HCCI combustion

Green Car Congress

A team from Universita degli Studi di Pisa (Italy) and Rolf Reitz at the University of Wisconsin-Madison are proposing a novel combustion concept—Homogenous Charge Progressive Combustion (HCPC)—based on a split-cycle principle to control HCCI combustion in diesel-fueled engines. ICEF2007-1743 (2007). —Musu et al.,

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Qoros and FreeValve partner on camless technology; new Qoros concept uses FreeValve PHEA

Green Car Congress

At Auto China in Beijing, Qoros Auto unveiled a concept car showcasing a new Qoros “Qamfree” engine featuring FreeValve ’s Pneumatic-Hydraulic-Electric-Actuator (PHEA) technology. For any engine load criteria, the timing of intake and exhaust can be independently programmed. FreeValve AB is a sister company to Koenigsegg Automotive.

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GM Developing New Concept for Emission Control for Lean-burn SIDI Engines: Passive Ammonia SCR

Green Car Congress

Engineers at GM’s R&D Center are developing a new low-cost concept for NO x control from lean-burn spark ignition direct injection (SIDI) engines: passive ammonia SCR. GM’s passive ammonia SCR concept places a conventional three-way catalyst upstream of an SCR catalyst. Lean-burn (i.e., a high air-to-fuel ratio) SIDI (e.g.,

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UW-Madison engineer collaborating with entrepreneur on 6-cycle, external combustion engine; could be up to 30% more efficient than standard diesel

Green Car Congress

The K6 engine uses six strokes instead of four to reduce the pressure of exhaust gases, which allows it to harvest more energy rather than expelling it with the gas. The K6 engine represents a unique combination of previous concepts. Shedd (2007) Continuous Combustion General Purpose Engine System (SAE 2007-32-0010).

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Mazda announces SKYACTIV-X: gasoline Spark Controlled Compression Ignition

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Under the original “Sustainable Zoom-Zoom” vision announced in 2007, Mazda has endeavored to offer both driving pleasure and environmental and safety performance. 2015) “Development of Dynamic Models for an HCCI Engine with Exhaust Gas Rebreathing System,” SAE Technical Paper 2015-01-1803 doi: 10.4271/2015-01-1803. Earlier post.).

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Volkswagen Unveils New One-Liter Concept Car; Smallest Production-Intent Diesel Yet from Volkswagen Applied in A Full Hybrid Design

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Ulrich Hackenberg, Member of the Board of Volkswagen Brand Technical Development, in front of the Volkswagen Concept Car L1 in Frankfurt. Volkswagen unveiled the L1, its second-generation one-liter class concept car, at the Frankfurt Motor Show. The earlier, first-generation 1-Litre concept. Click to enlarge. Earlier post.)

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University of Wisconsin Researchers Investigating Dual-Fuel (Gasoline and Diesel) Partially Premixed Combustion for High-Efficiency, Ultra-Low Emission Combustion; 53% Thermal Efficiency

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Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. SAE 2007-01-0191).

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