Reductant injection system diagnostics

Details Reductant injection system diagnostics Reductant injection system diagnostics

2011-07-05

2011-07-05

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

C060S274000, C060S276000, C060S286000, C060S301000, C060S303000

Reexamination Certificate

active

07971426

ABSTRACT:
A method is described for controlling operation of a reductant injection system. In one example, a pump of the reductant injection system is operated at a pressure to inject reductant into an exhaust system based on voltage supplied to the pump. The method can allow operation of the reductant injection system during degradation of a pressure sensor that is used to determine reductant flow.

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ISA, United Kingdom Intellectual Property Office, International Search Report of GB0819830.1, Jan. 5, 2009, 1 page.

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