Functional diagram of the fuel injection system of a non-turbocharged diesel engine
1 - Fuel injection pump; 3 - Fuel pump; 15 - Bypass valve; 30 - Injectors; 43 - Pre-filter; 50 - Return fuel line; 54 - Fuel injection line of the 1st cylinder; 63 - Fuel tank; 73 - Fuel filter; 73a - Restrictive channel; 86 - Fuel thermostat open, fuel warm; 86a - Fuel thermostat closed, fuel cold; 87 - Fuel Intake Line - Cold Fuel; 87a - Fuel return line - warm fuel; 148 - Fuel injection intake line with fuel radiator
Scheme of organization of fuel injection system of diesel engine with low-pressure supercharging
1 - Fuel injection pump; 3 - Fuel pump; 15 - Bypass valve; 27 - Hollow bolt; 42 - Fuel filter; 43 - Pre-filter; 50, 80, 81 - Return fuel line; 52 - Cork; 73 - Fuel filter bracket; 74 - Fuel filter mounting bolt; 76, 78 - Sealing rings; 77 - Fuel filter seal; 82 - Fuel intake line; 83 - Fuel injection line from the high-pressure fuel pump; 84 - Clamp; 86 - Fuel thermostat; 87 - Fuel intake line from the fuel radiator; 88 - Return fuel line from the fuel radiator; 89 - Fuel suction line; 131 - Retainer; 148 - Fuel intake line with fuel radiator
Schematic diagram of the fuel injection system of a diesel engine with high-pressure supercharging
30 - Nozzle; 52 - Cork; 53 - Seal; 54 - 59 Discharge pipes