Abstract: The invention provides a pipeline detection device and method, which is applicable to a pipeline system of an automobile. A main pipeline of the pipeline system is connected with a male connector via a connection terminal, and a conductive structure is provided at the connection terminal. An anode end of the detection circuit is connected with a power supply end of an ECU unit of the automobile, and a cathode end of the detection circuit is connected with a ground end of the ECU unit. In this way, when the connection terminal correctly connects the main circuit with the male connector, the conductive structure is in conducting state, so that a current loop is formed between the detection circuit and the ECU unit, and whether an abnormality occurs in the pipeline system is detected based on a voltage on the detection circuit.

Abstract: A silencer having an outer housing; and a central perforated tube through which air flows. The silencer further includes an additional perforated structure located between the central perforated tube and the outer housing, a first chamber is formed between the central perforated tube and the additional perforated structure, and the additional perforated structure is configured such that at least one second chamber is formed, which is at least partially located radially outside of the first chamber, where the second chamber is communicated with the first chamber by perforates. The disclosure further relates to a vehicle engine having the silencer. The silencer is compact in structure, and has a better broadband silencing effect.

Abstract: The invention provides a pipeline detection device and method, which is applicable to a pipeline system of an automobile. A main pipeline of the pipeline system is connected with a male connector via a connection terminal, and a conductive structure is provided at the connection terminal. An anode end of the detection circuit is connected with a power supply end of an ECU unit of the automobile, and a cathode end of the detection circuit is connected with a ground end of the ECU unit. In this way, when the connection terminal correctly connects the main circuit with the male connector, the conductive structure is in conducting state, so that a current loop is formed between the detection circuit and the ECU unit, and whether an abnormality occurs in the pipeline system is detected based on a voltage on the detection circuit.

Abstract: A silencer having an outer housing; and a central perforated tube through which air flows. The silencer further includes an additional perforated structure located between the central perforated tube and the outer housing, a first chamber is formed between the central perforated tube and the additional perforated structure, and the additional perforated structure is configured such that at least one second chamber is formed, which is at least partially located radially outside of the first chamber, where the second chamber is communicated with the first chamber by perforates. The disclosure further relates to a vehicle engine having the silencer. The silencer is compact in structure, and has a better broadband silencing effect.