Engine Performance Improvement
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Transcript of Engine Performance Improvement
![Page 1: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/1.jpg)
Engine Performance Improvement
Prof. (Dr.) M P Poonia Director
NITTTR, Chandigarh
![Page 2: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/2.jpg)
Actual P–V Diagram
PMEP
![Page 3: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/3.jpg)
Indicated Power (IP)
IP =
IP = Where, IP = Indicated Power, W Pm = Mean Effective Pressure N/m2
L = Stroke Length, m A = Piston Top Area, m2
N = Engine RPM
![Page 4: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/4.jpg)
Reduce resistance during intake and exhaust stages: multiple valve configuration
Cool the air before allowing it to enter the cylinder
Fuel Injection: do away with the carburetor >>>
Improvement of Performance
![Page 5: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/5.jpg)
Increase the compression ratio
Increase the engine displacement: more power
Compress more air into the cylinder during intake: using supercharger and turbocharger
Improvement of Performance
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Reduce resistance during suction – Air Filter
Improvement of Performance
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Reduce resistance during suction
– Carburetor
Improvement of Performance
Air in
ThrottleAir + Fuel
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Reduce resistance during suction – Intake Manifold
Improvement of Performance
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Reduce resistance during suction – Inlet Valve
Improvement of Performance
Patm Pint < Patm
Intake manifold
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Reduce resistance during suction – Valve Lift
Improvement of Performance
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Reduce resistance during exhaust – Valve Lift
Improvement of Performance
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Reduce resistance during exhaust- Manifold
Improvement of Performance
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Reduce resistance during exhaust – System
Improvement of Performance
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Proper Valve Timing – Longer Opening and Closing Timing
Improvement of Performance
![Page 15: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/15.jpg)
Improvement of Performance
Cool the air before allowing it to enter the cylinder
ρair
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Improvement of Performance
Fuel Injection: do away with the carburetor
![Page 17: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/17.jpg)
Improvement of Performance
Increase the compression ratio
![Page 18: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/18.jpg)
Improvement of Performance
Increase the engine displacement: more power
IP =
![Page 19: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/19.jpg)
Improvement of Performance
Compress more air into the cylinder during intake: using supercharger and turbocharger.
![Page 20: Engine Performance Improvement](https://reader036.fdocuments.net/reader036/viewer/2022070522/58eed43d1a28aba0288b45b5/html5/thumbnails/20.jpg)
FAQIndicated Power of a 4 – stroke engine is =a) pmLAN b) 2pmLANc) pmLAN/2 d) 4pmLANwhere pm = mean effective pressure,L = strokeA = area of piston andN = rpm of engine
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FAQ
If the intake air temperature of an I.C. engine increases, its performance willa) increaseb) decreasec) remain samed) none of the mentioned
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FAQ
(a)
(b)
(c)
(d)
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FAQ
(a)
(b)
(c)
(d)
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FAQ
(a)
(b)
(c)
(d)
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Thanks