Low-cost off-line hot-test-free test cabinet and test system for diesel engine

The invention discloses a low-cost diesel engine offline hot-test-free test cabinet and test system in the technical field of diesel engine test. The test cabinet comprises a power switch, an adapter, an auxiliary controller, a relay, a sensor interface, a USB Type-B interface and a DB9 interface, the power switch is externally connected with a 220V power supply and is used for supplying power to each element in the test cabinet; the adapter is a double CAN card box and is connected with the auxiliary controller through a CAN1 port. Using a CAN2 port to communicate with an ECU on an engine, collecting information of the ECU of the engine and a sensor, and sending the information to a test system; the auxiliary controller is used for receiving signals of a sensor connected to an engine and transmitting the signals to a CAN1 port of the adapter in real time. Meanwhile, a relay control signal sent by the test system is received, and the relay is controlled to be closed and separated. According ...