February 2021

FEBRUARY 2021 AFTERMARKET 35 www.aftermarketonline.net the latest New High Temperature Ceramic technology – which can reach temperatures of 1,350°C and hit 1,000°C in one second.” On replacement, Mark said: “Glow plug replacement should be part of the winter service as they play an integral role in a vehicle’s economy and emissions performance. Instead of changing one faulty glow plug, workshops should ‘upsell’ by replacing all of them. If one plug has failed, it is extremely likely that the remaining plugs will shortly suffer a similar fate.” Common rail Commenting on the challenges of working with common rail diesel systems (CRS), Fatiha Laauich, Pan European Strategic Marketing Manager at DENSO, said: “The CRS relies on three vital elements: the fuel pump, injectors and electronics. The original HP2 fuel pumps used primarily for the passenger car segment in the late 1990s, have gone through several incarnations to become the HP5 versions used today. “Just as the CRS has continued to evolve, so has the injector, as to achieve the latest emission standards, their control has had to become ever more precise and the need to respond in microseconds become imperative. This has led to Piezo injectors entering the fray. “The final element is the electronic management of the injection process, which alongside the analysis of many other parameters, is traditionally measured with the use of a pressure sensor to indicate pressure in the fuel rail feed to the ECU. However, despite developing technology, fuel pressure sensors can still fail, causing error codes and, in extreme cases, complete ignition shutdown. As a result, DENSO pioneered a more accurate alternative, which instead of housing the pressure sensor outside of the CRS, measures fuel injection pressure through an embedded sensor inside the fuel injector itself. “Based around a closed-loop control system, DENSO’s Intelligent–Accuracy Refinement Technology (i-ART) is a self-learning injector fitted with its own microprocessor, enabling it to autonomously adjust the fuel injection quantity and timing to their optimal levels and communicating this information to the ECU.” She added: “Although fourth generation CRS service and repair can, and should be, undertaken by the independent sector, fuel pumps or injectors that have failed cannot currently be repaired, they must be replaced with new parts of matching OE quality supplied by reputable manufacturers.” Adapt Looking a little further ahead, the ban on the sale of new petrol and diesel passenger vehicles is looming. “Even with the forthcoming new legislation, “said Manuel Alves, Sales and Marketing Director at Hartridge, “diesel vehicle owners will still need their valuable, hardworking cars on the road. While garages do need to look ahead, they also need to find opportunities that will enable them to optimise this revenue potential. “Monitoring and preventative maintenance of fuel injectors presents such an opportunity, as does offering pre-MOT injector testing to intervene if emissions might not be healthy for the test. “Customers are well engaged with the practice of ‘add- on’ services and the benefits they can bring, helping them to avoid costly bills in the future and ensuring their motoring isn’t interrupted by an unexpected MOT fail. By investing in the right equipment now, garages can seamlessly implement extra services, which work to potentially protect customers from big bills and generate additional revenue.” Manuel continued: “Pre-MOT injector testing and injector health readings in servicing are easy with dedicated Hartridge Sabre CRi Master or Expert systems, which are part of the expansive Delphi Technologies’ Aftermarket diagnostics range.” Manuel added: “While the forthcoming ban on the sale of petrol and diesel passenger vehicles may be very real, there’s clearly ample opportunity for garages to not only carry on catering for them, but in fact provide a greater service offering than ever.” / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / '2 +(-') (+1, -*102 +,+(-') -.-0 - (+'--, ' Y AWA ) -1.-01 --+1 1 01 01 - -- (-' 210 .1 -.( - 01-,0-01 1-'((0- -*-. * 01+( * 2 * 0- ,+ 1 )('' &%&& $%# #$"$ ,' ! (',.- 1 '.' 0, (+ 1 Above: Hartridge Sabre CRi Master in action