Engine system and method of operating same over multiple engine load ranges
A method of operating an engine system should produce relatively low concentrations of various emissions without compromising a desired power output of the system. In order to operate an engine system of the present disclosure, a predetermined total amount of fuel injected into at least one combustion chamber is apportioned into at least a first amount and a second amount of fuel. The first amount of fuel is injected into the at least one combustion chamber during non-auto ignition conditions. The second amount of fuel is injected into the at least one combustion chamber during auto-ignition conditions. When the engine system is in a mid-low engine load range, the second amount of fuel is one of equal to or less than 15% of the predetermined total amount of fuel. When the engine system is in a high engine load range, the second amount of fuel is greater than 15% of the predetermined total amount of fuel.
- Research Organization:
- Caterpillar Inc., Peoria, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC05-97OR22605
- Assignee:
- Caterpillar Inc. (Peoria, IL)
- Patent Number(s):
- 7,219,649
- Application Number:
- 11/201,238
- OSTI ID:
- 1531530
- Country of Publication:
- United States
- Language:
- English
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