A lower value explains a lower closed cycle efficiency. The COVIMEP quantifies the variability of the indicated work per cycle in terms of the standard deviation of the indicated mean effective pressure (IMEP), expressed as a percentage. The CoV was generally smaller than 1 % and never ...
In the certification test cycle driving, the aged (30 h at 700 °C) Ag/YMnO3 catalysts showed 20% higher CO conversion and 10% higher hydrocarbon conversion than the reference Pt catalyst. The new catalyst had little or no deterioration when exposed to the high-sulfur conditions for 90 h....
The New European Driving Cycle (NEDC) test of nano-graphene lubricating oil and pure lubricating oil was carried out respectively, and the emission characteristics of the engine under different speeds and loads were compared under the same conditions. The results showed that under most working ...
There has also been a substantial effort over the last several years to establish a global standard test cycle, which can be used to qualify all engine and vehicle types for all countries. Traditionally, regulation of engine emissions (particularly in the case of heavy-duty diesel) ends when ...
There are two types of diesel engine, the two-stroke engine and the four-stroke engine. As the names suggest, they differ in the number of movements of the piston required to complete each cycle of operation. The simplest is the two-stroke engine. It has no valves. The exhaust from the...
Combined cycle engine research in Japanese HYPER Project Higher thermal efficiency and reduced combustion gas temperature are essential requirements for improved fuel economy and reduced NOx emissions of the indi... H Miyagi,H Miyagawa,T Monji,... - Joint Propulsion Conference & Exhibit 被引量: 28...
G. Method of controlling emissions from a diesel cycle internal com- bustion engine with perovskite-type metal oxide compounds, US Patent 7514055, 2009. [27] Stephen, J.G. Catalytic converter comprising perovskite-type metal oxide catalyst US Patent 6531425, 2003. [28] Lombardo, E.A.; Ulla...
load cycle, and exhaust after-treatment devices. In addition to these factors, different environmental settings in which diesel engines are used also affect the gaseous andparticulate mattercomposition of diesel engine exhaust. In a DPM mixture, the gaseous concentrations ofdiesel exhaustare oxides of...
The diesel engine was simulated through a thermodynamic cycle model and results indicated that the brake power decreased by 32.1% and 19.4% at 4200 rpm while brake specific fuel consumption (BSFC) increased 47.1% and 24.7% at 2200 rpm for DME and DEE, respectively when compared to the diesel...
4.The process of claim 1 wherein the diesel engine comprises a two-stroke per cycle engine. 5.The process of claim 1 wherein the diesel engine comprises a four-stroke per cycle engine. 6.The process of claim 1 wherein the diesel engine comprises an on-highway engine or an off-highway...