An integrated leak detection device for an engine cylinder, the integrated leak detection device comprising:
- a body, having a gas inlet, a first chamber, a connecting channel, a second chamber, and a gas outlet, the gas inlet being configured to be in communication with a gas supply device, the first chamber being in communication with the gas inlet, the connecting channel being located between the first chamber and the second chamber and in communication with the first chamber and the second chamber, and the gas outlet being configured to be in communication with the engine cylinder;
- a shutoff structure movably disposed on the connecting channel, the shutoff structure having a blocking state in which the communication between the first chamber and the second chamber is shut off and a communicating state in which the first chamber is in communication with the second chamber, and the shutoff structure being moved to switch between the blocking state and the communicating state;
- a first pressure sensor disposed on the body and located in the first chamber, the first pressure sensor being configured to detect a pressure of the first chamber;
- a second pressure sensor disposed on the body and located in the second chamber, the second pressure sensor being configured to detect a pressure of the second chamber, to detect a gas pressure of the engine cylinder, and to detect a piston top-dead-center position of the engine cylinder;
- and
- a controller disposed on the body and electrically connected to the first pressure sensor and the second pressure sensor, the controller being configured to execute a predetermined program based on feedback information of the first pressure sensor and the second pressure sensor to obtain leakage information, gas pressure information, and piston top-dead-center position information;
- wherein the integrated leak detection device for the engine cylinder further comprises:
- a pressure regulating mechanism disposed on the body, at least a portion of the pressure regulating mechanism being inserted in the first chamber and in communication with the first chamber, and the pressure regulating mechanism being configured to regulate the pressure of the first chamber;
- wherein the body is further provided with a gas release runner which is in communication with the outside world;
- and
- the pressure regulating mechanism comprises:
- a valve seat disposed in the first chamber, the valve seat having a gas intake runner, a first gas discharge runner and a second gas discharge runner, wherein the gas intake runner is in communication with the gas inlet and the first gas discharge runner, the first gas discharge runner is in communication with the connecting channel and the first chamber, and the second gas discharge runner is in communication with the first gas discharge runner and the gas release runner;
- a gas intake plunger movably inserted in the valve seat, the gas intake plunger having a closed state in which the communication between the gas inlet and the first gas discharge runner is shut off and an open state in which the gas inlet is in communication with the first gas discharge runner;
- a gas release plunger movably inserted in the gas release runner, the gas release plunger being connected to an end of the gas intake plunger away from the gas inlet, and the gas release plunger having a closed state in which the communication between the gas release runner and the second gas discharge runner is shut off and an open state in which the gas release runner is in communication with the second gas discharge runner;
- a first elastic member, a first end of the first elastic member being connected to an end of the gas release plunger away from the gas intake plunger;
- and
- an adjusting member movably disposed on the body, the adjusting member being connected to a second end of the first elastic member;
- wherein
- the adjusting member moves to compress or release the first elastic member, when the first elastic member is compressed, the gas intake plunger is in the open state and the gas release plunger is in the closed state;
- when the first elastic member is at a first degree of release, the gas intake plunger and the gas release plunger are both in the closed state;
- and
- when the first elastic member is at a second degree of release, the gas intake plunger is in the closed state and the gas release plunger is in the open state.