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原文传递 FINDING THE UNDERLYING CAUSE FOR TURBOCHARGER REPLACEMENT

题名：	FINDING THE UNDERLYING CAUSE FOR TURBOCHARGER REPLACEMENT
正文语种：	eng
作者：	TRACY MARTIN
摘要：	Despite the constant press coverage of new, or soon-to-be-launched all-electric vehicles, gasoline, and diesel-powered cars and light trucks will be around for some time to come. In 2021, 38 percent of all new vehicles sold in the U.S. have a turbocharged engine and as miles accumulate on these vehicles many will require turbocharger replacement.Poor engine performance, and/or turbo-related DTCs are too often blamed on the turbocharger which is only at fault about 20 percent of the time. If the turbocharger is at fault the root cause of the failure should be determined (Figure 1). After all, if a customer's car has a dead battery, only an inexperienced technician would replace the battery without figuring out why it has no charge-bad alternator, wiring or sensor could all contribute to the problem. Finding the root cause of a turbo failure is no different.Once the turbo is determined to be "bad," there are alternatives to replacing it with a new OEM unit. The aftermarket can THIS COMPRESSOR WHEEL (LEFT) HAS AN "orange peel" effect created by expansion and contraction cracks due to over-speeding. The wheel at right shows wheel-rub where it met the compressor housing, also caused by over-speeding or lubrication problems.
出版年：	2022
期刊名称：	Motor age
卷：	141
期：	4
页码：	47-48,50,52