Device and method for controlling urea injection system of diesel engine
US9689292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2011 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Jun 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed are an apparatus and a method for controlling a urea injection system of a diesel engine. The apparatus (200) comprises: an operation condition parameter acquiring module (201), a control quantity determining module (202) and a drive signal determining module (203), wherein the operation condition parameter acquiring module (201) is configured to acquire operation condition parameters related to the urea injection system, the control quantity determining module (202) is configured to determine a control quantity for controlling the urea injection system based on the operation condition parameters, a target value of urea pressure in a urea buffer chamber (107) and a control model designed based on a physical model of the urea injection system, and the drive signal determining module (203) is configured to determine a drive signal for a urea pump (103) drive motor (106) according to the determined control quantity. The method for controlling the urea injection system may achieve accurate control of the urea injection pressure, and reduce a deviation between the urea pressure and a target value of the urea pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.