prince ae ppt
TRANSCRIPT
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GGS COLLEGE OF MODERN TECHNOLOGY,KHARAR
Prepared by-Prince Kumar
14098465th Sem(ME)
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MPFi (Petrol), Diesel fuel system
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Introduction To Supply a proper Ratio of Gasoline and Air to
Cylinder.Without usage of Carburetor to mixing the Fuel
and air In SI Engine.Varied the Piston speed using Advanced sensors
(ECU).
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Classification of MPFIBy the Placing of the injector it is further classified into
two types.I. Port Injection system .II. Throttle Injection system
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Port Type systemThe Injector is Placed in the Intake Manifold near the intake
Port .The Injector Sprays Gasoline into the Air inside the manifold
.Fuel & Air mix in Uniform manner And this mixture Entered
into Cylinder .
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Throttle Injection systemThis is similar to carburetor Body with throttle valve
controlling the amount of Air entering intake manifold .
The sensor is used to control the fuel mixing level.
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Type Of Injection System
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Sketch of MPFI
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Engine Control Unit (ECU)In General ECU in turn is controlled by the Data
Input From the set of sensors Located all over the engine & its Auxiliaries.
ECU primarily controls Ignition Timing & Quality of Fuel to be injected.
ECU gives various commands to the Engine Fuel intake system & Spark ignition system , To deliver an Over all Satisfactory Performance of the engine From start to Shut down including Emission Control .
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Advantages of MPFII. Without using of carburetor the product cost is Low.II. Engine Efficiency is High. III. Low Maintenance.IV. High Power to Engine.V. No extra Heating While Warm up. Etc,.
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Disadvantage Of MPFI
1. Hood Height of the Car is High.2. Manifold Heat control System OR Valve is
Required.3. Intake Manifold control only air not Fuel .
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Diesel fuel
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Use of Diesel FuelIn Mobile Applications
Trucks Locomotives And now passenger cars Ships
Stationary Applications Power generation Pump sets in agriculture
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Properties of diesel fuelIt is found that Specific gravity, flash point, viscosity, sulfur content, and
carbon residue increase with increase in service severity. The cetane number (which measures the fuel’s ignition
quality) decreases with increase in service severity. There is also a decrease in volatility with increase in service severity.
Properties are, however, inter-related and it is difficult to isolate the effect of any single variable
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Advantages and Disadvantages of diesel fuelAdvantages DisadvantagesDiesel cars offer better
mileage. Diesel is an efficient and
energy dense fuelDiesel vehicles don’t need
ignition tune-ups Diesel engines are designed to
withstand the challenge of higher compression.
Diesel costs just as much as gasoline.
Diesel doesn’t offer high-speed performance.
Diesel cars need regular maintenance
Diesels may cost more when maintenance is neglected
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Thank You!