April 2021

R otating electrics constantly used to start the car, and keep it running properly. A failure in one of these components will mean your customer will not be going anywhere fast. When replacement or repair is required, you need to know you are using the best kit available. Key aspects Looking at starters and alternators, Fatiha Laauich, Pan European Strategic Marketing Manager at DENSO, identified a number of key aspects: “A replacement starter/alternator does not have to look like the original one, but the starter has to function the same and the alternator has to provide an equivalent output, as well as have identical pulley specifications, while both must obviously match the fitting interface dimensions.” Fatiha had one note of caution: “Never use a starter or alternator with a lower power/current output capacity; for example, do not use a 1.4 kW rated starter for a vehicle that requires a 2.0 kW starter, or use a 80A rated alternator for a vehicle that requires a 120A alternator. Overloading an alternator or excessive current flow to a starter will cause their premature failure.” On replacing with an idling stop system (ISS) starter when a car previously had a conventional starter, she said: “If the ISS starter’s overall construction and main dimensions are equivalent or smaller compared to a conventional starter, an ISS starter may replace it. If the dimensions are very close or a little bigger, it is best to perform an installation check for fitting verification. Also, replacing the conventional starter with an ISS type, such as a DENSO advanced engagement (AE) starter, should not require unique controls, software or engine modifications. It works like a conventional planetary starter, but includes key design features like dual layer, long-life electrical brushes, as well as a unique structure and pinion spring mechanism. Indeed, ISS starters are built with high durability and performance features, even under severe environmental conditions, to ensure extended lifetime for an increased number of starting cycles: replacing with an ISS starter should therefore be considered as an upgrade, though it may be costly.” Latest developments Looking at the latest developments in starting systems, Fatiha said: “With the rise of electrification, to save fuel and reduce emissions to achieve ever more stringent emission legislation, starting systems have undergone many developments. Emerging Stop/Start technologies for combustion engines have already changed the manufacturing landscape, with starting systems with a robust starter motor, such as DENSO’s ‘Change of Mind’ starter motor, which has the capability of restarting before the engine reaches 0 RPM, are required for vehicles with idling Stop/Start features. When it comes to hybrid electric vehicles, integrated starter generator (ISG) rotating electric machine technology, such as belt-driven ISG for micro/mild 34 AFTERMARKET APRIL 2021 ROTATING ELECTRICS www.aftermarketonline.net All the latest tech and information in the realm of rotating electrics START A NEW CHAPTER HEVs with low voltage systems, replaces the alternator and starter motor for light electrification systems. “ISG allows the HEV’s engine to instantly and quietly restart via the belt drive system after the idle stop, so functions as a starter. Like a conventional alternator, the ISG produces electric power when the vehicle is running, which is used to supply electric devices and/or to charge the battery. The ISG can help to decelerate the vehicle by generating electric power, which is called regenerative braking. The electric power generated charges the battery, reducing fuel consumption in the process. If a clutch disconnects the ISG and the air conditioning compressor from the engine during the idle stop, the ISG can drive the air-conditioning compressor via a belt.” Moving on to alternators, Fatiha mused over which in- car technology/feature is likely to have the biggest impact on the evolution of alternators: “Various smart or intelligent charging systems are being used, but currently local interconnect network (LIN) based systems are the mainstream and are becoming industry standard. Basically, alternators with a LIN regulator use bidirectional, multiplex single-wire LIN Bus communication lines to transmit digital signals based on special LIN protocols.” She added: “In order to help technicians better tackle the work they undertake and further improve their skills, DENSO has an online training programme where they can benefit from interactive, IMI accredited training.” To sign up, click the ‘E-LEARNING’ tab at www.denso- am.co.uk/training/ Significant Meanwhile, on the reman front, Autoelectro is marking two major milestones in 2021, with the company reaching its 35th anniversary, while also remanufacturing its one millionth starter motor and alternator. Autoelectro UK Sales Manager Nick Hood commented: “No matter how old, new or rare the vehicle is, Autoelectro has most likely seen it before and has the knowledge and experience to provide a premium replacement. Quality has been the dominator Right: Autoelectro’s one millionth alternator