Injection pumps – principle of operation

  • 17/03/2014 ·
  • Turbo-Tec ·

VP29/30 AND VP44 BOSCH DISTRIBUTOR INJECTOR PUMPS The difference between VP29/30 pump and VP44 pump is that in VP29/30 pumps high pressure is generated by one piston placed axially, and in VP 44 pumps two or three pistons located radially. Owing to the possibility of generating high pressure values and electronic control system, these pumps…

Continue reading

Injectors – principle of operation

  • 17/03/2014 ·
  • Turbo-Tec ·

Solenoid injectors These injectors operate within Common Rail systems. They are the most frequently used supply systems of high pressure engines. They enable the separation of high pressure generation function and fuel injection performance. In consequence, they provide flexibility and adaptation of¬†the injection system to the engine higher than conventional systems. Since fuel is located…

Continue reading

Pump-Injectors – repair process

  • 17/03/2014 ·
  • Turbo-Tec ·

Verification process starts from external inspection. Apart from obvious and noticeable mechanical damage, such as broken return spring or piston, the following defects may be detected by this method: – worn external seal and damage to housing around their settlement, – considerably contaminated sprayer nozzle, – damaged element fastening the return spring, – damaged upper…

Continue reading

Pump-Injectors – gallery of damages

  • 17/03/2014 ·
  • Turbo-Tec ·

Causes of damages Majority of mechanical defects is caused by natural wear and tear of elements connected with car milage. Other damage causes: – damage to fuel injection unit nozzles, in consequence of incorrect combustion process of mixture, fuel low quality, car’s nonprofessional tuning etc. – damage to drive system caused by incorrect assembly of…

Continue reading

Pump-Injectors – principle of operation

  • 17/03/2014 ·
  • Turbo-Tec ·

Power supply systems of high pressure engines equipped with fuel injection units were used particularly in cars manufactured by Volkswagen. Fuel injection unit is a device which incorporates an injector and a high pressure pump. Elimination of high pressure lines allows for obtaining ¬†injection pressure exceeding 200 MPa. Each engine cylinder is supplied with separate…

Continue reading

Turbocharger – gallery of damages

  • 17/03/2014 ·
  • Turbo-Tec ·

Causes of failures Frequently, a turbocharger needs repairs or has to be replaced not because of the device itself, but as a result of external factors. Therefore, it is important to establish the core of failure before mounting another turbo compressor. It will prevent another damage due to defects caused by external factors. A turbocharger…

Continue reading

Turbocharger – principle of operation

  • 17/03/2014 ·
  • Turbo-Tec ·

A turbo compressor is an air compressor driven by exhaust fumes. Exhaust gases, going out from an engine through an exhaust manifold, are directed to a turbine chamber where a rotor is situated. By means of a shared shaft, it drives compressor`s rotor located on the other side of the device (frequently referred to as…

Continue reading
  • 1
  • 2