Cold start operation device for diesel engine in plateau region and control method thereof

A cold start operation device for a diesel engine in a plateau region under a low ambient temperature comprising:

• a thermal insulating chamber;
• an outlet provided on a side wall of the thermal insulating chamber communicating with an air-inlet pipe of a cylinder via an outlet pipe, an inlet provided on another side wall of the thermal insulating chamber communicating with an air-outlet pipe of the cylinder via an inlet pipe;
• an outlet control valve arranged on the outlet of the thermal insulating chamber;
• an inlet control valve installed on the inlet of the thermal insulating chamber;
• an inlet throttle valve installed in the air-inlet pipe and arranged above the outlet of the outlet pipe;
• an outlet throttle valve installed in the air-outlet pipe and above the inlet of the inlet pipe;
• a first temperature sensor installed inside the thermal insulating chamber to measure the temperature inside the thermal insulating chamber;
• a second temperature sensor installed at the outside of the engine to measure the ambient temperature;
• an ECU connecting to an inlet valve, an outlet valve, the inlet throttle valve, the outlet throttle valve, the inlet control valve, the outlet control valve, a cylinder injector, the first temperature sensor and the second temperature sensor by control lines, respectively;
• the ECU measuring and obtaining temperature information via the first temperature sensor and the second temperature sensor;
• each of the outlet pipe, the inlet pipe, and the thermal insulating chamber provided with a heat insulating structure, respectively.