- 专利标题: Delay based feed forward strategy to control pressure in a diesel exhaust fluid delivery system
-
申请号: US15982915申请日: 2018-05-17
-
公开(公告)号: US10724414B2公开(公告)日: 2020-07-28
- 发明人: Palanimuthu Thalamuthu , Oliver Wintersteller , George Geomy
- 申请人: Robert Bosch GmbH
- 申请人地址: DE Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DE Stuttgart
- 代理机构: Michael Best & Friedrich LLP
- 主分类号: F01N3/00
- IPC分类号: F01N3/00 ; F01N3/20
摘要:
A system for regulating pressure in a diesel exhaust fluid delivery system. The system includes a first dosing valve, a pump, a hydraulic line, and an electronic processor. The electronic processor is configured to determine a dosing demand, determine a time delay between the first dosing valve opening and the pump activating, and determine a first threshold time and a second threshold time based on the time delay. The electronic processor is also configured to activate a timer. When the timer reaches the first threshold time, the electronic processor is configured to freeze the dosing demand and activate the pump based on the dosing demand. When the timer reaches the second threshold time, the electronic processor is configured to open the first dosing valve and release the freeze on the dosing demand.
公开/授权文献
信息查询