What Causes High Exhaust Temperature Alarm in China VI Diesel Vehicles?

1 Answers
AlexandraFitz
07/25/25 10:24am
China VI diesel vehicles high exhaust temperature alarm causes: The idle switch does not close, the idle contact is disconnected, the ECU determines that the engine is under partial load. At this time, the ECU determines the fuel injection quantity and injection time based on the air flow sensor, crankshaft position, and speed signals. The exhaust temperature increases because modern vehicles are equipped with three-way catalytic converters. Types of exhaust systems: Exhaust temperature protection is one type of compressor temperature protection device. Effects of excessive temperature: During compressor operation, certain factors can cause the exhaust temperature to exceed normal values. This not only increases compressor power consumption but also causes lubricating oil to carbonize, degrading its performance and affecting the compressor's normal operation. To avoid excessively high exhaust temperatures, an injection valve can be used to control the exhaust temperature.
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