Diesel fuel injection engine diagnostics,
Diesel Mechanic : Servicing & specialist repairs:
Breakdown mobile technician callout available to Shrewsbury, Telford Shropshire areas (subject to service van availability). Enquiries welcome.
Diesel engine basic operating principle
The diesel engine is a compression - ignition engine operating on the principle of air inducted through the intake valve
sucked in by
downward movement of the piston then being compressed on the upward stroke of the piston. The air temperature
increases to around
800 degrees centigrade as it is compressed. Diesel fuel is injected into the cylinder in precisely measured quantities as
the piston reaches the end of the compression stroke BTDC . The pressurised injected fuel atomises as it mixes with the air and ignites ,causing
an energy explosion which forces the piston downwards during the power stroke as the air fuel mixture combusts.
Exhaust gas produced from combustion process is expelled through the exhaust valve as the piston rises on its exhaust stroke.
For the diesel engine to operate efficiently it is essential that the fuel injection equipment is maintained in good order. All pipes and connections should be leak free.
We can supply a range of diesel fuel line equipment including filtration, hose, sealing washers, delivery equipment, fuel injectors, fuel pumps and test equipment etc.
Diesel fuel injection pumps operate at very fine tolerances and require accurate calibration with highly specialised equipment. Diesel injection systems are particularly susceptible to damage caused by use of incorrect or contaminated fuel .
The diesel fuel injectors are a key component in delivering fuel into the combustion chambers of the engine and require periodic servicing / calibration to prevent problems with misfire, excessive smoke, uneven running, etc.
We have computerised equipment enabling
recoding of the engine control module when
fitting replacement coded fuel injectors
We can supply & fit:
Automobile diesel engine technology has progressed away from the association with sluggish performance, noise , and fume pollution, towards quiet running , fuel efficient ,low emission , high torque performance engines with sophisticated electronic control.
Reduced Exhaust Emissions
To achieve low exhaust emissions and maximised performance diesel engine design must include increased fuel injection pressures and precise control of the timing of fuel injection in the engine operating cycle.
Further enhancements include purification of exhaust gases by special filtration and chemical treatment in the exhaust system (diesel particulate filters) to allow vehicles to meet strict european emission legislation.