METHOD AND SYSTEM FOR CONTROLLING ENGINE PERFORMANCE

• US 20130231806A1
• Filed: 04/15/2013
• Published: 09/05/2013
• Est. Priority Date: 06/15/2010
• Status: Active Grant

• Current Assignee: GE Global Sourcing LLC (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: General Electric Company
• Inventors: Bailey, Kevin Paul, Dowell, John, Thwaites, Frederick, Nagurney, Jonathan
• Granted Patent: US 10,343,757 B2
• Time in Patent Office: Days
• US Class Current: 701/21
• CPC Class Codes: B63H 21/21 Control means for engine or transmission, specially adapted for use on marine vessels
• CPC Class Codes: F02B 37/16 by bypassing charging air
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

Methods and systems are provided for operating a vehicle including an engine comprising a turbocharger including a compressor and a turbine. The engine further includes a bypass path configured to selectively route gas from downstream of the compressor to upstream of the turbine. In one embodiment, the method comprises selectively increasing gas flow to the engine by adjusting gas flow through the bypass path from downstream of the compressor to upstream of the turbine. In this manner, the performance of the engine may be adjusted for various operating conditions.

Claims

1. A method of operating a marine vehicle comprising an engine including a turbocharger including a compressor and a turbine, comprising,

adjusting a bypass path from downstream of the compressor to upstream of the turbine when an engine acceleration exceeds an acceleration threshold;

and

adjusting the bypass path from downstream of the compressor to upstream of the turbine when an engine deceleration exceeds a deceleration threshold.

2. The method of claim 1, wherein the bypass path is adjusted according to an engine speed and a propeller load when the engine acceleration exceeds the acceleration threshold.

3. The method of claim 2, wherein gas flow through the bypass path is heated when the engine acceleration exceeds the acceleration threshold.

4. The method of claim 1, wherein the bypass path is adjusted according to an intake manifold pressure, an engine speed, and a propeller load when the engine deceleration exceeds the deceleration threshold.

5. The method of claim 1, wherein the deceleration threshold and the acceleration threshold vary according to engine speed.

6. A marine vehicle system, comprising:

an engine including a bypass path and a turbocharger including a turbine and a compressor, the bypass path configured to selectively route gas from downstream of the compressor to upstream of the turbine;

a propeller;

a coupling device connected to the engine and configured to selectively engage and disengage with the propeller;

a control system having computer readable storage medium with code therein, the code including instructions for,

selectively engaging the propeller;

selectively disengaging the propeller;

adjusting a bypass path from downstream of the compressor to upstream of the turbine when an engine acceleration exceeds an acceleration threshold and the propeller is engaged; and

adjusting the bypass path from downstream of the compressor to upstream of the turbine when an engine deceleration exceeds a deceleration threshold.

7. The marine vehicle system of claim 6, wherein the bypass path is adjusted according to an engine speed when the engine acceleration exceeds the acceleration threshold and the propeller is engaged.

8. The marine vehicle system of claim 6, wherein gas flow through the bypass path is heated when the engine acceleration exceeds the acceleration threshold and the propeller is engaged.

9. The marine vehicle system of claim 6, wherein the bypass path is adjusted according to an intake manifold pressure and an engine speed when the engine deceleration exceeds the deceleration threshold.