Volvo В13F Engines Fuel System, Design and Function Service Manual – PDF DOWNLOAD

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Volvo В13F Engines Fuel System, Design and Function Service Manual – PDF DOWNLOAD

FILE DETAILS:

Volvo В13F Engines Fuel System, Design and Function Service Manual – PDF DOWNLOAD

Language : English
Pages : 12
Downloadable : YES
Format : PDF
Size : 311 KB

DESCRIPTION:

Volvo В13F Engines Fuel System, Design and Function Service Manual – PDF DOWNLOAD

SAMPLE PAGES FROM THE MANUAL:

Fuel is drawn up the fuel lines by the supply pump (1) through the pickup tube in the fuel tank (2) in through the Engine Electronic Control Unit (EECU) cooling coil (3), and into the fuel filter housing (4). The fuel filter housing is equipped with a pre-filter (5) and a water separator (6), where fuel is filtered through the primary filter that separates any water from the fuel.

• The supply pump (1) forces the fuel into the fuel filter housing through the main filter (7) to a cylinder head longitudinal fuel gallery (8). This channel supplies each unit injector (9) with pressurized fuel by a circular groove around each unit injector in the cylinder head. The overflow valve (10) controls the fuel supply pressure to the unit injectors.
• The return fuel from the overflow valve (10) is returned back to the fuel filter housing and is mixed with the fuel from the fuel tank in a channel within the fuel filter housing (4). Supply Pump Valves Two valves are located in the supply pump (1). The safety valve (11) allows fuel to flow back to the suction side when the pressure becomes too high, e.g., if the fuel filter is blocked or is too restricted. The non-return valve (12) opens when hand-priming is used.
• Current Volvo diesel engines are electronically controlled and designed to meet today’s strict environmental standards. Meeting these standards requires optimum combustion. This demands, among other things, injecting the exact amount of fuel into the combustion chamber under very high pressure at precisely the correct time, depending on engine speed, load, temperature and other conditions. Totally mechanical injection systems cannot meet these demands and so requires that engines are equipped with an electronically controlled injection system. An Engine Electronic Control Unit (EECU) receives electrical signals from the accelerator pedal and a number of other sensors on the engine.
• These sensors provide speed, pressure and temperature signals, sent to the EECU, which in turn governs the fuel injection process. The EECU has a built-in diagnostic system which electronically detects and traces faults that might occur in the fuel system. Each cylinder has four valves. Individual differences always occur between the cylinders in an internal combustion engine. The engine has a cylinder balancing system, the purpose of which is to even out the amounts of fuel between the cylinders. Cylinder balancing takes place with the engine running at idle speed, providing certain preconditions have been met.

VOLVO В13F ENGINES FUEL SYSTEM, DESIGN AND FUNCTION SERVICE MANUAL – PDF DOWNLOAD:

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