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Title: Learning an intake oxygen concentration of an engine

System and method for learning an intake oxygen concentration of an engine. In one embodiment, the system includes an intake oxygen sensor and an electronic control unit. The intake oxygen sensor is configured to measure an oxygen concentration of intake air and output a signal indicative of an intake oxygen concentration value. The electronic control unit is configured to receive the signal indicative of the intake oxygen concentration value, determine whether fuel is being injected into an engine, determine whether the engine is operating in an over-run condition, control a valve to sweep an air pressure of an intake path of the engine across a plurality of air pressures, and store information indicative of intake oxygen concentration values across the plurality of air pressures to learn the intake oxygen concentration of the engine.
Inventors:
Issue Date:
OSTI Identifier:
1475577
Assignee:
Robert Bosch GmbH (Stuttgart, DE) DOEEE
Patent Number(s):
10,066,568
Application Number:
15/228,911
Contract Number:
EE0003303
Resource Relation:
Patent File Date: 2016 Aug 04
Research Org:
Robert Bosch GmbH, Stuttgart, DE (Germany)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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