Engine protection device based on turbine rear exhaust temperature

The utility model discloses an engine protection device based on a turbine rear exhaust temperature. According to the utility model, the temperature signal of an exhaust port is acquired through a temperature sensor, and then transmitted to a vehicle-mounted ECU (Electronic Control Unit) module; the by the vehicle-mounted ECU module compares an acquired actual temperature value acquired with a reference temperature value set in the internal logic program of the vehicle-mounted ECU module, if the actual temperature is higher than the reference temperature, the vehicle-mounted ECU module sends a control signal to an engine fuel injector for reducing the fuel charge of an engine fuel injector so as to achieve the effect of limiting an engine torque, thus the engine turbine rear exhaust temperature is measured after the whole automobile assembly is finished, adverse influences on the normal working of an engine and other related components of a motor vehicle power system due to over-high engine turbine rear exhau