The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Sep. 29, 2018
Weichai Power Co., Ltd., Shandong, CN;
Weichai Power Emission Solutions Technology Co., Ltd., Shandong, CN;
WEICHAI POWER CO., LTD., Weifang, CN;
WEICHAI POWER EMISSION SOLUTIONS TECHNOLOGY CO., LTD., Weifang, CN;
Abstract
A tank cover of a urea tank for an SCR aftertreatment system is provided with an air hole, a gas inlet hole, a gas discharge hole, a first constant pressure check valve and a second constant pressure check valve. The tank cover is mounted at a liquid injection port of a tank body of the urea tank. The air hole is provided in a portion of the tank cover corresponding to the liquid injection port. The gas inlet hole and the gas discharge hole are provided in the portion of the tank cover corresponding to the liquid injection port. An inlet of the first constant pressure check valve is butted with the air outlet hole. An inlet of the second constant pressure check valve is butted with the air inlet hole.