A quick warm-up system during engine start-up period using adaptive control of intake air and ignition timing Early activation of catalyst by quickly raising the temperature of the catalyst is effective in reducing exhaust gas during cold starts. One such technique... M Ueno,S Akazaki,Y Yasui...
The ignition timing setting device is constructed of a device for estimating the wall temperature of a combustion chamber of the engine from a variable, which indicates the quantity of combustion energy of the engine, and another device for calculating the ignition timing from the wall temperature ...
(e.g., 97% vs. 99% due to excessive HC emissions), the benefits of RCCI in terms of combustion timing, leaner mixture’s equivalence ratio, much reduced EGR rate (e.g., zero EGR) and reduced pumping/heat losses, and less in-cylinder heat transfer can offer a net gain of several ...
Climate change also profoundly effects water resources by shifting rainfall patterns, enhancing temperatures, and altering the timing of glacier melt and snowfall, leading to changes in the seasonality of drainage flows6,7. Therefore, identifying various predisposing climatic variables is a crucial issue...
Method and apparatus for setting the timing of the ignition system of an internal combustion engine A method and an apparatus for setting the timing of the ignition system (CDI) of an internal combustion engine (M); after checking the timing of the ignition circuit (CDI) with the engine (M...
Internal Combustion Engine CFD with Simcenter STAR-CCM+ In-Cylinder Solution October 28, 2024___ Simcenter STAR-CCM+ In-Cylinder Solution, an add-on to Simcenter STAR-CCM+, offers an in-cylinder-specific workflow, which involves minimal inputs, streamlined pre-processing... By Alexandros Panago...
The results show that the engine performance increases with increasing some parameters such as cycle temperature ratio, cycle pressure ratio, inlet pressure; with decreasing some parameters such as friction coefficient, inlet temperature, steam ratio, retarding angle of intake valve closing. However, ...
For 25% WI relative to the metered fuel mass and at 20° CA bTDC of ignition timing, the values of the decreasing average surface temperature were 46 K, 83 K, 35 K, and 20 K for the piston crown, cylinder liner, chamber, and exhaust valves, respectively. The decrease in the average...
The research on two-stroke engines has been focused lately on the development of direct injection systems for reducing the emissions of hydrocarbons by minimizing the fuel short-circuiting. Low temperature combustion (LTC) may be the next step to further improve emissions and fuel consumption; howev...
The sldemo_engine model uses the Triggered Subsystem blocks in the Valve Timing and Combustion subsystems. In this example, the tasks of all four cylinders are implemented with one set of blocks instead of four sets of blocks, one set per cylinder. Open the model. ...