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PRCI PR-239-9438
- Field Application of Electronic Gas Admission with Cylinder Pressure Feedback for Large Bore Engines
- Report / Survey by Pipeline Research Council International, 06/01/1996
- Publisher: PRCI
$25.00$49.00
L51754e
SECOR International, Inc.
Need: In 1992, PRCI called upon industrial firms and research organizations to demonstrate the feasibility of closed loop autobalancing of power cylinders of large bore natural gas engines. In response, The Woodward Governor Company (WGC), and Colorado State University's Engine and Energy Conversion Laboratory (EECL) combined efforts to propose the creation of the Large Bore Engine Testbed (LBET) for development and proof of concept of the Woodward Governor Electronic Gas Admission Valve (EGAV) system (later designated the AutoBalancer TM 5000). In 1994, the project was complete.
Benefit: The purpose of this project was to evaluate the performance of electronic fuel gas admission valves and effects of continuous automatic cylinder balancing of large bore natural gas engines under actual field conditions. These goals have already been met under laboratory conditions at the Colorado State University Engines and Energy Conversion Laboratory in Fort Collins. The specific project objectives were to:
1. Extend the feasibility of electronic fuel gas admission valves where gas valve timing and duration are varied to optimize fuel control and charge mixing from the laboratory environment to actual field applications.
2. Extend the feasibility of closed loop control using in-cylinder pressure sensors to achieve continuous, automatic power cylinder balancing from the laboratory environment to actual field applications.
3. Repeat the benefits of automatic continuous cylinder balancing shown in the laboratory testing under actual field conditions (i.e. fuel savings, improved cylinder misfire rates, improved emissions levels).
Result: In order to accomplish these objectives, the Woodward Governor Company AutoBalance TM 5000 control system was installed and tested at four host sites. Although the specific test plan differed slightly for the four host sites, the focus of the test program was consistent. The primary objective was to evaluate the effects of engine balance and the performance of the control system by testing a matrix of varying engine loads and speeds. Load and speed are the two primary control parameters affecting engine balance. Other tests were conducted to determine the effects of the electronic gas admission valve (EGAV) configuration (i.e. start of admission, end of admission, and duration).
SECOR International, Inc.
Need: In 1992, PRCI called upon industrial firms and research organizations to demonstrate the feasibility of closed loop autobalancing of power cylinders of large bore natural gas engines. In response, The Woodward Governor Company (WGC), and Colorado State University's Engine and Energy Conversion Laboratory (EECL) combined efforts to propose the creation of the Large Bore Engine Testbed (LBET) for development and proof of concept of the Woodward Governor Electronic Gas Admission Valve (EGAV) system (later designated the AutoBalancer TM 5000). In 1994, the project was complete.
Benefit: The purpose of this project was to evaluate the performance of electronic fuel gas admission valves and effects of continuous automatic cylinder balancing of large bore natural gas engines under actual field conditions. These goals have already been met under laboratory conditions at the Colorado State University Engines and Energy Conversion Laboratory in Fort Collins. The specific project objectives were to:
1. Extend the feasibility of electronic fuel gas admission valves where gas valve timing and duration are varied to optimize fuel control and charge mixing from the laboratory environment to actual field applications.
2. Extend the feasibility of closed loop control using in-cylinder pressure sensors to achieve continuous, automatic power cylinder balancing from the laboratory environment to actual field applications.
3. Repeat the benefits of automatic continuous cylinder balancing shown in the laboratory testing under actual field conditions (i.e. fuel savings, improved cylinder misfire rates, improved emissions levels).
Result: In order to accomplish these objectives, the Woodward Governor Company AutoBalance TM 5000 control system was installed and tested at four host sites. Although the specific test plan differed slightly for the four host sites, the focus of the test program was consistent. The primary objective was to evaluate the effects of engine balance and the performance of the control system by testing a matrix of varying engine loads and speeds. Load and speed are the two primary control parameters affecting engine balance. Other tests were conducted to determine the effects of the electronic gas admission valve (EGAV) configuration (i.e. start of admission, end of admission, and duration).
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