Cooling system for a gas engine piston, gas engine, cooling method for gas engine piston

Patent metadata

Field	Value
Publication number	US-12221918-B2
Application number	US-202318143038-A
Country	US
Kind code	B2
Filing date	May 3, 2023
Priority date	May 20, 2022
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

The present invention pertains A cooling system for a gas engine piston, the system comprising a cooling oil supply configured to feed a cooling oil flow to the gas engine piston, and a control device configured to control the cooling oil flow based at least on a predetermined parameter. The present invention further pertains to a gas engine comprising at least one gas engine piston and a cooling system according to any of the previous claims, wherein the gas engine piston is configured to be operable with at least one combustion gas. In addition, the present disclosure pertains to a cooling method for a gas engine piston, comprising the steps of receiving at least one predetermined parameter at the control device; controlling the cooling oil flow based on at least the predetermined parameter; and observing a sufficient cooling oil flow fed to the gas engine piston.

First claim

What is claimed is:

1. A cooling system for a gas engine piston, the system comprising:
a cooling oil supply configured to feed a cooling oil flow to the gas engine piston
a sensor configured to measure a predetermined parameter, and
a control device configured to control the cooling oil flow based at least on the predetermined parameter comprising a combustion gas concentration, a hydrogen concentration, and/or a hydrogen/hydrocarbon gas substitution ratio.

2. The cooling system according to claim 1 , wherein the control device is configured such that the cooling oil flow is restricted when the hydrogen concentration is increased, and wherein the cooling oil flow is exceeded when the hydrogen concentration is decreased.

3. The cooling system according to claim 1 , wherein the control device is configured such that the cooling oil flow is at a minimum when the hydrogen concentration is at a maximum, and wherein the cooling oil flow is at a maximum when the hydrogen concentration is at a minimum.

4. The cooling system according to claim 1 , wherein the control device is configured to control the cooling oil flow further based on a gas piston temperature.

5. The cooling system according to claim 1 , further comprising a user input interface configured to provide the predetermined parameter.

6. The cooling system according to claim 1 , wherein the sensor is a hydrogen sensor of the WLD-type, configured to provide the predetermined parameter.

7. The cooling system according to claim 1 , wherein the control device further comprises a look-up table, correlation, and/or algorithm configured to provide an output to control the cooling oil flow.

8. The cooling system according to claim 7 , wherein the output is a function of a cooling oil pressure.

9. The cooling system according to claim 1 , wherein the cooling oil supply comprises a nozzle, or a plurality of nozzles.

10. The cooling system according to claim 1 , further comprising a cooling oil pump configured to increase or decrease cooling oil pressure upon actuation by the control device to control the cooling oil flow.

11. A gas engine comprising at least one gas engine piston and a cooling system according to claim 1 , wherein the gas engine piston is configured to be operable with at least one combustion gas, wherein the predetermined parameter is a function of the used combustion gas.

12. A cooling method for a gas engine piston, comprising a cooling oil supply configured to feed a cooling oil flow to the gas engine piston, and a control device, comprising the steps of:
receiving at least one predetermined parameter from a sensor, at the control device, the predetermined parameter comprising a combustion gas concentration, a hydrogen concentration, and/or a hydrogen/hydrocarbon gas substitution ratio;
controlling the cooling oil flow based on at least the predetermined parameter; and
observing a sufficient cooling oil flow fed to the gas engine piston.

13. The cooling method according to claim 12 , wherein the predetermined parameter comprises a hydrogen concentration and/or a hydrogen/hydrocarbon gas substitution ratio, wherein the controlling step further comprises a sub-step of decreasing cooling oil flow for an increased hydrogen concentration and/or an increased hydrogen/hydrocarbon gas substitution ratio, and a further step of increasing cooling oil flow for a decreased hydrogen concentration and/or a decreased hydrogen/hydrocarbon gas substitution ratio.

Assignees

• Caterpillar Energy Solutions Gmbh

Inventors

• Ohler Sebastian
• Berger Olaf

Classifications

• F01P2025/08

  Temperature · CPC title

• F01P2025/04

  Pressure · CPC title

• F01P3/08 Primary

  Cooling of piston exterior only, e.g. by jets · CPC title

• F01P2003/006

  the liquid being oil · CPC title

• F01M1/16

  Controlling lubricant pressure or quantity (rendering machines or engines inoperative or idling on lubricant pressure failure F01M1/22) · CPC title