Functional diagram of the fuel injection system of a non-turbo diesel engine
1 - injection pump; 3 - Fuel pump; 15 - bypass valve; 30 - Injectors; 43 - Pre-filter; 50 - Return fuel line; 54 - Injection fuel line of the 1st cylinder; 63 - Fuel tank; 73 - Fuel filter; 73a - Restrictive channel; 86 - Fuel thermostat is open, fuel is warm; 86a - Fuel thermostat closed, fuel cold; 87 - Intake fuel line - cold fuel; 87a - Fuel return line - warm fuel; 148 - Discharge intake fuel line with fuel radiator
Scheme of the organization of the fuel injection system of a low-pressure supercharging diesel engine
1 - 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 - O-rings; 77 - Fuel filter seal; 82 - Intake fuel line; 83 - Injection fuel line from high pressure fuel pump; 84 - Clamp; 86 - Fuel thermostat; 87 - Intake fuel line from the fuel radiator; 88 - Return fuel line from the fuel radiator; 89 - Suction fuel line; 131 - Retainer; 148 - Intake fuel line with fuel cooler
Scheme of the organization of the fuel injection system of a diesel engine with high-pressure supercharging
30 - Nozzle; 52 - Cork; 53 - Seal; 54 - 59 Discharge nozzles