Control device for internal-combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 2, 2019
Grant Date -
Feb 8, 2018
app pub date -
Jun 13, 2017
filing date -
Aug 4, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An internal-combustion engine includes an EGR device that recirculates a portion of exhaust gas, as EGR gas, from an exhaust passage to an intake passage through an EGR valve. A control device for the control device is configured to perform: EGR ratio estimation processing that calculates, by using an estimation model, an estimated EGR ratio; and estimation model update processing that updates the estimation model. The estimation model is configured to calculate the estimated EGR ratio based on a pressure parameter being a ratio of or a difference between gas pressures upstream and downstream of the EGR valve. The pressure parameter is represented by a pressure parameter model that is updatable. The estimation model update processing includes: calculating an actual EGR ratio; and updating the pressure parameter model such that the estimated EGR ratio becomes closer to the actual EGR ratio.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F02M Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 2, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 2, 2030 |
