Concept Engine Exhaust Gas 
Green Car Congress
MAY 8, 2014
Motiv Engines, LLC introduced the second-generation of its engine concept 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.
Green Car Congress
DECEMBER 1, 2014
Each piston bank operates independently of the other but is housed within the same engine block and has separate lubrication systems. The Eco-Motive H-motor—basically two separate engines housed within the same engine block—can be powered by either gasoline or compressed natural gas (CNG), at the driver’s decision.
Green Car Congress
OCTOBER 25, 2010
The basic idea of the new Diesel combustion illustrated in this paper is to control the heat release rate by a gradual supply of an almost homogeneous charge, without relying on exhaust gas recirculation to moderate the reaction. Thus the HCPC range can extend to all engine operating conditions, including very high loads.
Green Car Congress
OCTOBER 31, 2009
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. Tags: ARPA-E Concept Engines Engines Hybrids Plug-ins. Piechna et al.
Green Car Congress
JUNE 6, 2012
Secondly, the central combustion chamber is benefit for highly efficient scavenging via intake and exhaust ports without using valves. Furthermore, natural gas will be investigated as the fuel of the system. Firstly, inherent mechanical balance of the system can be realized when the two linear generators are synchronized.
Green Car Congress
MAY 23, 2009
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.
Green Car Congress
MAY 9, 2013
A cryogenic engine such as the Dearman piston engine produces zero emissions at the point of use; has low greenhouse gas emissions provided the liquid air or nitrogen is produced from low carbon electricity; has energy and power density on a level with battery electric technology; and has the potential for rapid refueling.
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