18/03/2021
In our continuing series on the Common Rail Direct Injection (CRDI) system, we now zoom in on issues that can arise with a key component -- the injector.
Today’s common rail injectors can perform multiple injections during a single combustion cycle, and inject fuel into the engine chamber at pressures of up to 30,000 psi through clearances as small as 1 micron, a fraction the width of a human hair.
This makes for a better performing engine overall, but problems can result if maintenance schedules aren’t adhered to.
Common issues with diesel engine components include:
• Particle contamination: With such tight tolerances, even the smallest foreign particles can cause damage. These particles can erode the control valve and ball, altering the atomisation and thereby the quantity and distribution of the injected fuel.
• Water contamination: If the fuel has been contaminated by excess water, it can lead to corrosion of metal surfaces and reduce lubrication between moving parts. Water in the diesel fuel system will cause significant wear of both fuel pump and the injectors.
This is why it’s critical to choose quality injectors manufactured to original equipment specifications. Bosch injectors are the standard for the industry and provide superior performance and reliability. If your diesel vehicle is giving you problems, click here, https://boschcarsa.co.za/diesel/ to make a booking and let our experts find the issue.
In part 3 we look at other ways fuel injectors and other components can become unreliable or fail outright.
Covid-19 disclaimer
We follow the strictest Covid-19 hygiene measures: staff must wear masks and wash their hands regularly; all vehicles are thoroughly sanitised before and after servicing or repairs. Please note: Customers are required to wear a mask and must be sanitised before entering the premises. Thank you for your cooperation!
