Combustion mode switching with a turbocharged/supercharged engine
Abstract
A method for switching between low- and high-dilution combustion modes in an internal combustion engine having an intake passage with an exhaust-driven turbocharger, a crankshaft-driven positive displacement supercharger downstream of the turbocharger and having variable boost controllable with a supercharger bypass valve, and a throttle valve downstream of the supercharger. The current combustion mode and mass air flow are determined. A switch to the target combustion mode is commanded when an operating condition falls within a range of predetermined operating conditions. A target mass air flow to achieve a target air-fuel ratio corresponding to the current operating condition and the target combustion mode is determined. The degree of opening of the supercharger bypass valve and the throttle valve are controlled to achieve the target mass air flow. The amount of residual exhaust gas is manipulated.
- Inventors:
- Issue Date:
- Research Org.:
- Robert Bosch GmbH, Stuttgart (Germany)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1215834
- Patent Number(s):
- 9,140,199
- Application Number:
- 13/679,010
- Assignee:
- Robert Bosch GmbH (Stuttgart, DE)
- DOE Contract Number:
- EE0003533
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Nov 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Mond, Alan, and Jiang, Li. Combustion mode switching with a turbocharged/supercharged engine. United States: N. p., 2015.
Web.
Mond, Alan, & Jiang, Li. Combustion mode switching with a turbocharged/supercharged engine. United States.
Mond, Alan, and Jiang, Li. Tue .
"Combustion mode switching with a turbocharged/supercharged engine". United States. https://www.osti.gov/servlets/purl/1215834.
@article{osti_1215834,
title = {Combustion mode switching with a turbocharged/supercharged engine},
author = {Mond, Alan and Jiang, Li},
abstractNote = {A method for switching between low- and high-dilution combustion modes in an internal combustion engine having an intake passage with an exhaust-driven turbocharger, a crankshaft-driven positive displacement supercharger downstream of the turbocharger and having variable boost controllable with a supercharger bypass valve, and a throttle valve downstream of the supercharger. The current combustion mode and mass air flow are determined. A switch to the target combustion mode is commanded when an operating condition falls within a range of predetermined operating conditions. A target mass air flow to achieve a target air-fuel ratio corresponding to the current operating condition and the target combustion mode is determined. The degree of opening of the supercharger bypass valve and the throttle valve are controlled to achieve the target mass air flow. The amount of residual exhaust gas is manipulated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}
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