Title: Dynamic estimator for determining operating conditions in an internal combustion engine

Abstract

Methods and systems are provided for estimating engine performance information for a combustion cycle of an internal combustion engine. Estimated performance information for a previous combustion cycle is retrieved from memory. The estimated performance information includes an estimated value of at least one engine performance variable. Actuator settings applied to engine actuators are also received. The performance information for the current combustion cycle is then estimated based, at least in part, on the estimated performance information for the previous combustion cycle and the actuator settings applied during the previous combustion cycle. The estimated performance information for the current combustion cycle is then stored to the memory to be used in estimating performance information for a subsequent combustion cycle.

Inventors:

Hellstrom, Erik; Stefanopoulou, Anna; Jiang, Li; Larimore, Jacob

Issue Date:

2016-01-05

Research Org.:

Robert Bosch GmbH, Stuttgart, DE (Germany)

Sponsoring Org.:

USDOE

OSTI Identifier:

1234690

Patent Number(s):

9228527

Application Number:

13/621,527

Assignee:

Robert Bosch

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES

F02B1/12 - with compression ignition

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

F02D13/0265 - {Negative valve overlap for temporarily storing residual gas in the cylinder}
F02D2041/1432 - {the system including a filter, e.g. a low pass or high pass filter}
F02D2200/0616 - determined by estimation
F02D35/024 - {using an estimation}
F02D35/025 - {by determining temperatures inside the cylinder, e.g. combustion temperatures}
F02D35/026 - {using an estimation}
F02D35/028 - {by determining the combustion timing or phasing}
F02D41/3035 - {a mode being the premixed charge compression-ignition mode}
F02D41/40 - with means for controlling injection timing or duration

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE
Y02T10/40 - Engine management systems

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DOE Contract Number:  

EE0003533

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Sep 17

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING