Weichai Power Co., Ltd.

Weichai Power Emission Solutions Technology Co., Ltd.

Yibao Wang

Hao Zhang

Xuguang Tan

Juan Yan

Yu Zhang

Xiaoli Zhang

Wei Gao

Fengshuang Wang

Xiaohua Wang

Dongsheng Wang

Wang Yao

Jinlong Fu

Suying Zhang

Xinglong Liu

A post-treatment system includes two SCRs, a second SCR is connected to a booster in parallel, and a three-way valve is arranged before the second SCR and the booster, such that whether an exhaust gas flows through the second SCR or the booster is controlled by means of controlling the three-way valve. In the case of a low temperature, the three-way valve is controlled to close a branch of the booster, such that the exhaust gas flows through the second SCR and a first SCR that are connected in series, thereby reducing the energy loss caused by the exhaust gas flowing through the booster, and improving the NOconversion efficiency in the case of a low temperature. In a case of a high temperature, the three-way valve is controlled to close a by-pass line, such that the exhaust gas flows through the booster and the first SCR.

Post-treatment system, method for controlling post-treatment system, and vehicle

An engine and a double-swirl mixing device thereof are provided. The double-swirl mixing device includes a mixing tube configured to mix exhaust gas with urea, a tapered mixer including a tapered tube having an outlet end extending into the mixing tube, and a plurality of tapered swirl plates which are arranged along a circumferential direction on a side wall of the tapered tube, and a fan-type blade arranged at the outlet end of the tapered tube, and a diameter of an inlet end of the tapered tube is smaller than a diameter of the outlet end of the tapered tube.

Generator and double-swirl mixing device thereof

Growing community of inventors

Shandong, China

Yibao Wang