Partially Premixed Combustion, PPC â Why all diesel engines ...
Partially Premixed Combustion, PPC â Why all diesel engines ...
Partially Premixed Combustion, PPC â Why all diesel engines ...
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<strong>Combustion</strong> Loss [%]<br />
Exhaust Loss [%]<br />
Heat Transfer Loss [%]<br />
Efficiency & Losses<br />
2<br />
1.5<br />
MK1<br />
Gasoline<br />
Ethanol<br />
50<br />
45<br />
MK1<br />
Gasoline<br />
Ethanol<br />
1<br />
0.5<br />
40<br />
35<br />
30<br />
0<br />
1 1.2 1.4 1.6 1.8<br />
[-]<br />
22<br />
20<br />
18<br />
16<br />
14<br />
12<br />
MK1<br />
Gasoline<br />
Ethanol<br />
25<br />
1 1.2 1.4 1.6 1.8<br />
[-]<br />
• Relative combustion loss is between 0.2% and<br />
1.7% in <strong>all</strong> cases.<br />
• Less relative exhaust loss with lower λ .<br />
• More heat transfer in stoichiometric <strong>PPC</strong> due<br />
to higher combustion temperature .High heat<br />
transfer loss is the main reason for low<br />
efficiency of <strong>diesel</strong>.<br />
10<br />
1 1.2 1.4 1.6 1.8<br />
[-]<br />
40
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