Diesel engine fuel system Hyundai Elantra 3

Technical data of the fuel system
Technical data Name Technical requirements Fuel tank 55 l Fuel filter High pressure Fuel pump Electric, mounted in the fuel tank Fuel pressure supplied to the injectors...

General information about the Common Rail injection system
Location of injection system components "Common Rail" on a diesel 4-cylinder engine 1 – air flow meter; 2 – ECU; 3 – high pressure fuel pump; 4 – high pressure...

Injection system characteristics
Characteristics of a conventional injection system In conventional fuel injection systems with a distributor and direct injection pump, the injection system includes...

Controlled fuel injection
Control fuel injection can be performed at a crankshaft position of 90° before TDC. If the start of fuel injection occurs less than 40° before TDC, fuel can be deposited...

Main fuel injection
The energy required to operate the engine comes from sequential main fuel injection. This means that, in essence, the main fuel injection provides the engine crankshaft...

Additional fuel injection
On some versions of NOx catalytic converters, the additional fuel injection can lead to NOx afterburning. This results in the main fuel injection continuing for 200°...

Reducing toxicity of exhaust gases
Formation of the fuel mixture and combustion process injection pressure; injection time; aerosol spread (nozzle number, spray profile, spray direction); fuel injection...

Common Rail Fuel System
Common Rail Fuel Injection System 1 – high pressure fuel pump; 2 – fuel filter; 3 – fuel tank with preliminary fuel filter and fuel booster pump; 4 – ECU; 5 – glow plug...

EDC control system
The electronic diesel engine control system EDC for Common Rail includes three large systems: 1. Sensors for recording operating mode parameters, which convert various...

Engine Control Unit (ECU)
The ECU evaluates the signals received from external sensors and limits them to an acceptable voltage level. Based on the input data and characteristics stored in the...

Controlling the maximum amount of air entering the engine
There are many reasons why large amounts of fuel should not be injected into the engine cylinders: (or the maximum physically possible amount): excessive emission of...

Active shock absorber that reduces engine speed variations
1 – a sharp change in the position of the accelerator pedal by the driver 2 – engine crankshaft speed curve without active shock absorber 3 – crankshaft speed curve of...

Engine shutdown
The diesel engine operates on the principle of self-ignition of fuel, so it can only be turned off by cutting off the fuel supply. With Electronic Diesel Control (EDC),...

Glow plugs
Glow plug GSK2 1 – electrical contact; 2 – insulating washer; 3 - double gasket; 4 – contact pin; 5 – glow plug shell; 6 – heater insulation; 7 – heater and control...

Removal and installation the injector
The fuel system operates at high pressures (1350 bar). Do not perform any work on the fuel system while the engine is running or within 30 seconds after it has stopped....

Installing a high pressure fuel pump
The fuel system operates at high pressures (1350 bar). Do not perform any work on the fuel system while the engine is running or within 30 seconds after it has stopped....

Air flow meter (Air flow sensor — AFS)
A heated thin film air flow meter whose micromechanical measuring system records the air flow and its direction. The engine air temperature sensor is built into the air...

Coolant Temperature (ECT) Sensor
The coolant temperature sensor is installed in the cylinder head and monitors the coolant temperature and transmits a signal to the ECU. The sensor uses a thermistor,...

Camshaft Position (CMP) Sensor
The camshaft position sensor generates pulses at TDC of the piston of the 1st and 4th cylinders in the compression stroke, based on which the ECM unit determines the...

Crankshaft angle sensor
The position of the piston in the engine cylinder is decisive in determining the moment of fuel injection into the combustion chamber. Since the pistons are rigidly...

Injectors — checking operation
The Common Rail system uses special injectors with hydraulic boost and an electric starter element (solenoid valve) to ensure that the required amount of fuel is...

Fuel Pressure Sensor in High Pressure Rail (RPS)
The sensor measures the instantaneous fuel pressure in the high-pressure accumulator and transmits a signal to the ECM. Fuel under pressure through the hole acts on the...

Fuel Temperature Sensor (FTS)
The main element of the fuel temperature sensor is a negative temperature coefficient (NIC) thermistor, which is part of a voltage divider circuit. 5V is used as a...

Pressure regulating valve
The fuel pressure in the accumulator is maintained at the required level by the pressure regulating valve. The pressure regulating valve performs the same function as...

Troubleshooting issues
Troubleshooting the Fuel System Sign Probable cause Method of elimination The engine does not start The engine crankshaft is turned slowly by the starter Repair the...

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Elantra 3 (2000-2006)