Method for operating a feed module of an scr catalytic converter system
AssigneeRobert Bosch GmbH
InventorRohit Joshi
Life of this patent
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Abstract
A method for operating a feed module of an SCR catalytic converter system which has a feed pump, a feedback pump and a hydraulic interface channel. The feed module is operated in a test state in which a feed operation of the feed pump takes place and a feed operation of the feedback pump does not take place. Owing to a time profile of an MSP current (IMSP) of the feed pump it is decided in the test state whether the feed module is to change into a thawing state.
Claims19
A method for operating a feed module (10) of an SCR catalytic converter system which has a feed pump (11), a feedback pump (12) and a hydraulic interface channel (19), wherein the feed module (10) is operated in a test state in which a feed operation of the feed pump (11) takes place and a feed operation of the feedback pump (12) does not take place, wherein owing to a time profile of an MSP current (IMSP) of the feed pump (11) it is decided in the test state whether the feed module (10) is to change into a thawing state.
Dependencies are inferred from the claim text.