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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. —Musu et al. Tamagna, D.,
Rendering of the Ilmor 5-stroke conceptengine. Ilmor Engineering will present a new cutaway version of the Ilmor 5-stroke conceptengine at the upcoming Engine EXPO 2009, 16-18 June, in Stuttgart, Germany. The 5-stroke conceptengine is a self-funded proof of concept. Click to enlarge.
Motiv Engines, LLC introduced the second-generation of its engineconcept dubbed the MkII Clarke-Brayton Engine, which it intends to develop into a heavy-duty on-highway engine fueled by liquid natural gas (LNG). It expands all the way to ambient pressure before the exhaust stroke.
The OP4 light-duty opposed-piston diesel. Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty dieselconceptengine, the OP4. DieselEngines Fuel Efficiency' Click to enlarge. kW, compared to 4.1
The family of engines strategy uses a common power cylinder system across several different engine variants to address a range of power and torque requirements in order to serve multiple military vehicles with a common architecture. In December 2020, Achates Power announced that their 10.6L
Wave rotor technology has been explored since 1906, although its first significant application was in 1940 by Brown Boveri Company (BBC, today ABB) which used it as a high pressure stage for a gas turbine locomotive engine. Mazda produced 150,000 Comprex diesel cars.
HCCI is a combustion regime in which well-mixed fuel, exhaust gas and air are compressed to the point of auto-ignition. Unlike a spark ignition gas engine or dieselengine, HCCI produces a low-temperature, flameless release of energy throughout the entire combustion chamber.
Isuzu D201 35 hp dieselengine (left) and the LiquidPiston 40 hp X2 Prototype (right). Other features of the X2 include: Quiet operation: engine lacks poppet valves and over-expansion minimizes exhaust noise. HEHC thermodynamic advantages relative to the diesel and the Otto cycles. Click to enlarge.
Heat recovery could also be achieved using the Ricardo split cycle engine, a novel internal combustion engine design that incorporates liquid nitrogen to capture exhaust heat and increase fuel efficiency. The Dearman engine. Compressed air engines (e.g., Compressed Air EnginesConceptEnginesEngines'
The HPE was long thought to be a system in which all engine valves had to be actuated in a fully variable manner to allow for two-stoke pneumatic modes and still enable the four-stroke combustion mode. In large naturally-aspirated SI engine, high-friction, pumping losses and part-load operation all contribute to poor fuel efficiency.
Rotor 1, Rotor 2 and the connecting cam form the total internal mechanism of the engine. The Exhaust port is located on the outer side of the engine block. The engine, according to the company, does not have a traditional Otto or Diesel cycle. First, it helps to oxidize the exhaust gases more fully.
The prototype is of the naturally-aspirated Split Cycle gasoline engine, and is intended to be a proof of the basic technology of the split cycle with firing after Top Dead Center (one of the key attributes of the engine and cycle). Tags: ConceptEngines. Sal Scuderi. Earlier post.).
It compresses the pressurized gas produced by exhaust gas turbocharger, comprising fresh air and exhaust gas introduced from the EGR valve. However, the control of combustion phasing is one of the crucial issues in determining whether the diesel PCCI engine could be commercialized or not. —Meng et al.
The objective of this AOI is to research, develop, and demonstrate cost-competitive enabling technologies for Class 8 truck engine systems that can enable the achievement of breakthrough Brake Thermal Efficiency (BTE) using EPA certified diesel fuels while meeting the latest emission standards. turbomachinery.
The technology divides the four strokes of a conventional combustion cycle over two paired cylinders - one intake/compression cylinder and one power/exhaust cylinder. Currently the engine prototype is undergoing testing and analysis in San Antonio, Texas. The event takes place from June 16-18 in Stuttgart, Germany.
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