fuel systems - 1 1 AUTOMOBILE ENGINEERING MODULE 2 CIJIL B JOHN Asst Professor Dept of ME JECC MODULE-2 2.1 Fuel systems Carburetor simple modern MPFI

fuel systems - 1 1 AUTOMOBILE ENGINEERING MODULE 2 CIJIL B...

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AUTOMOBILE ENGINEERING MODULE 2 CIJIL B. JOHN Asst. Professor Dept. of ME, JECC 1 1
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MODULE-2 2.1 Fuel systems Carburetor – simple & modern, MPFI, CRDI etc. 2.2 Ignition systems Battery type, Magneto type, TCI, CDI, starter, solenoid switch, Bendix drive 2.3 Cooling systems Thermosyphon, Forced, coolant types etc 2.4 Lubrication systems Dry Sump, Wet Sump, Pump operated, Mixed lubrication – filter, pump, SAE classification of lube oils etc. 11/11/16 2
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2.1 Fuel systems: Fuel feed systems petrol In petrol engine, the petrol from the fuel tank reaches through the fuel pump, filter and carburettor to the engine cylinder. 1. Gravity system : In this system the fuel tank is mounted at a place higher than that of the carburettor. The fuel flows from the tank to carburettor through the filter due to gravitational force. It does not require any fuel pump. It is a simple and cheap system. This system is used in Scooters, Mopeds and motor cycles. Engine Fuel tank Fuel filter Carburettor 11/11/16 3
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Gravity Fuel feed system - Motorcycles 11/11/16 4
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Fuel feed systems (petrol) 2. Air Pressure system In this system, a pressure sealed tank is used. The pressure is created in the tank by means of a separate air pump. For starting, the pump is primed by cam which produces pressure in the tank and the fuel flows to the carburettor. 3. Vacuum system In this system the engine suction is used for sucking the fuel from the main tank to auxiliary fuel tank then it flows by gravity to the carburettor. 11/11/16 5
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Fuel feed systems (petrol) 4. Pump system In pump system , a fuel pump is used to feed the fuel from the fuel tank to the carburettor. The pump is driven either by the camshaft or electrically. In this system fuel tank can be placed at any suitable position in the vehicle. This system is used in car, jeep, bus and lorries. Storage tank Carburettor Filter Fuel pum p 11/11/16 6 Engine
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Fuel feed pumps Fuel pump is used in fuel system to deliver fuel from the fuel tank to the carburettor. 1.) Mechanical fuel pump (Diaphragm type) 2.) Electrical fuel pump 11/11/16 7
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11/11/16 8
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Mechanical (Diaphragm) fuel pump 11/11/16 9
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Fuel filters for petrol All carburetors have a no. of passages and small holes through which petrol must flow. Tiny pieces of dirt or blobs of water can obstruct the flow and
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  • Fall '16
  • MR BIJU CV
  • fuel, Fuel injection, Fuel Injection Systems, Petrol Injection systems

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