Methods and systems for humidity and PCV flow detection via an exhaust gas sensor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 18, 2015
Issued Date -
N/A
app pub date -
Sep 25, 2013
filing date -
Jan 18, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and systems are provided for estimating a PCV flow to an engine based on the output of an exhaust gas oxygen sensor. During DFSO conditions, a reference voltage of the sensor is modulated initially with an intake throttle open and then with the intake throttle closed. PCV flow leaking past the piston valves in an aging engine, as well as an ambient humidity estimate, are inferred based on the outputs of the sensor during the modulating with the intake throttle open and closed.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully