Tenneco (Suzhou) Emission System Co., Ltd.

Anzhou Wu

Gaofeng Fan

Zhenqiu Yang

Haitao Zhang

Shuai Guan

Chao Gong

Daling Liu

A common rail comprises a shell and a pressure detection apparatus and a pressure adjustment apparatus that are installed on the shell. The shell comprises an inlet passage, an outlet passage, at least one conveyance port that is connected to the inlet passage, and at least one flow return port that is connected to the outlet passage. The pressure detection apparatus is connected to the inlet passage. The pressure adjustment apparatus is connected between the inlet passage and the outlet passage. The pressure adjustment apparatus can connect or disconnect the inlet passage and the outlet passage. Also disclosed is a carbamide spraying system having such a common rail. Because a carbamide solution returned from a nozzle is first gathered inside the common rail and then returns to a carbamide tank through the outlet passage and a return flow pipe, the length of the return flow pipe is reduced. Further disclosed are an application of a common rail in a diesel engine exhaust processing system, a carbamide spraying system, and a control method for a carbamide spraying system.

Common rail, application of the common rail, carbamide spraying system, and control method therefor

A common rail assembly used in a urea injection system, comprising at least a first common rail and a second common rail which are connected to each other, wherein the first common rail comprises a first housing, a pressure detecting device mounted on the first housing and a pressure adjusting device. The first housing comprises a first urea inlet channel, a first urea outlet channel, at least one first feeding inlet connected to the first urea inlet channel and at least one first back-flow outlet connected to the first urea outlet channel. The pressure detecting device is connected to the first urea inlet channel. The pressure adjusting device can connect/disconnect the first urea inlet channel to/from the first urea outlet channel. Also disclosed are a urea injection system and the application of the common rail assembly. A proper number of common rails selected based on different application requirements can be combined together by at least connecting the first common rail to the second common rail in series. The extension capability thereof is relatively high.

Common rail assembly, urea injection system and application thereof

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Kunshan Suzhou, China

Anzhou Wu