Title:
ＮＯｘ除去噴射器点火制御回路
Document Type and Number:
Japanese Patent JP5920985
Kind Code:
B2
Abstract:
An NOx injection system for treating a vehicle exhaust system comprises an injector for injecting a select material into the vehicle exhaust system and including an electrical coil. An impedance element is connected in series with a flyback diode across the coil. An injector firing control circuit is electrically connected to the injector for driving the coil, the switching circuit operating in an on mode to fire the injector and in an off mode to turn off the injector. The impedance element increases reverse voltage to increase injector turn off response.
Inventors:
Thomas, Stephen
Reynolds, James
Keidel, Sean
Shovels, michael
Reynolds, James
Keidel, Sean
Shovels, michael
Application Number:
JP2012542177A
Publication Date:
May 24, 2016
Filing Date:
December 02, 2010
Export Citation:
Assignee:
Tenneco Automotive Operating Company Inc.
International Classes:
F01N3/08
Domestic Patent References:
| JP2009108686A | ||||
| JP8261051A | ||||
| JP63080038A | ||||
| JP2008274786A | ||||
| JP2009539026A | ||||
| JP62013276U | ||||
| JP11141381A | ||||
| JP2004346808A | ||||
| JP63171637U |
Attorney, Agent or Firm:
Asamura patent office
Hideto Asamura
Hajime Asamura
Katsunori Shirae
Kazuyuki Ohinata
Hideto Asamura
Hajime Asamura
Katsunori Shirae
Kazuyuki Ohinata