What is used to determine the amount of fuel that is delivered by the injector?

The mass air flow sensor (MAF) is used to measure the flow rate of air entering a fuel injected engine. The PCM uses air mass information to calculate and deliver the correct amount of fuel to the cylinders under all engine operating conditions.

How the fuel is measured in an engine test?

The fuel consumed by the engine is taken from a continuously weighted measurement vessel which has the same properties as the vehicle tank. The detection of the weight of the fuel is carried out with a capacitive displacement sensor connected to the measurement vessel by means of a beam.

How many PSI can current diesel engine fuel system injection pressures reach?

Depending on rpm and engine load, the pressure in the rail can exceed 30,000 to 40,000 psi. The injectors are electronically controlled, and each has its own firing mechanism or solenoid.

What is fuel injection pressure in marine diesel engine?

The fuel oil firstly passes through a set of cold filters to a set of fuel oil booster pumps, raising the fuel oil pressure to around 12 15 bar, delivering the fuel through a set of heaters and viscotherm, a set of fine filters then to the fuel rail and to the engine fuel pumps where the pressure is raised to around …

How are diesel engines tested?

This includes: flame propagation and pressure determination testing, exhaust conditioner shutdown water levels and hydrostatic testing. dynamometer testing of diesel engines for performance, exhaust emissions, surface temperatures, fuel and exhaust conditioner water consumption and safety shutdown systems. smoke …

How the fuel quantity is controlled in marine diesel engine?

A direct drive volume control (DDVC) is applied to fuel injection control for marine diesel engine. The hydraulic cylinder pushes a plunger pump and fuel is pressurized. When the fuel pressure becomes greater than injection pressure, fuel is injected to a combustion chamber.

How does a diesel fuel injection work?

The fuel injection system lies at the very heart of the diesel engine. By pressurising and injecting the fuel, the system forces it into air that has been compressed to high pressure in the combustion chamber. high-pressure pipe – sends fuel to the injection nozzle. injection nozzle – injects the fuel into the cylinder.

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