Fuel supply system of an engine designed as gas engine or dual-fuel engine and engine

Patent metadata

Field	Value
Publication number	US-11891970-B2
Application number	US-202217869450-A
Country	US
Kind code	B2
Filing date	Jul 20, 2022
Priority date	Jul 29, 2021
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A fuel supply system of an engine designed as a gas engine or dual-fuel engine, has at least one solenoid valve. The solenoid valve is designed for introducing gas fuel into charge air or into a charge air line leading to at least one cylinder of the engine. The respective solenoid valve includes a valve body and an actuator with at least one magnetic plate and with at least one coil for actuating the valve body. The at least one solenoid valve of the solenoid valve is formed out of a corrosion-resistant material or is coated with a corrosion-resistant material.

First claim

The invention claimed is:

1. A fuel supply system of an engine configured as a gas engine or as a dual-fuel engine, comprising:
at least one solenoid valve configured for use in a corrosive atmosphere, wherein the at least one solenoid valve is configured to introduce gas fuel into charge air or into a charge air line leading to at least one cylinder of the engine,
wherein the respective solenoid valve configured for use in the corrosive atmosphere comprises:
a valve body;
an actuator with at least one magnetic plate that is exposed to the corrosive atmosphere; and
at least one coil configured to actuate the valve body,
wherein an entirety of the at least one magnetic plate of the respective solenoid valve, which is in direct contact with the corrosive atmosphere, is formed from a corrosion-resistant material or is coated with a corrosion-resistant material,
wherein the at least one coil of the at least one solenoid valve is directly embedded in the at least one magnetic plate.

2. The fuel supply system according to claim 1 , wherein
the at least one coil of the at least one solenoid valve is separated or sealed from a corrosive atmosphere by at least one separating element.

3. The fuel supply system according to claim 2 , wherein
the at least one separating element is formed out of a corrosion-resistant material or is coated with a corrosion-resistant material.

4. A fuel supply system of an engine configured as gas engine or dual-fuel engine, comprising:
at least one solenoid valve configured for use in a corrosive atmosphere and configured to introduce gas fuel into charge air or into a charge air line leading to at least one cylinder of the engine,
wherein the at least one solenoid valve configured for use in the corrosive atmosphere comprises:
a valve body;
an actuator with at least one magnetic plate;
at least one coil configured to actuate the valve body; and
at least one separating element, which is entirely planar and formed out of a corrosion-resistant material or is coated with a corrosion-resistant material and is configured to separate or seal the at least one magnetic plate from exposure to the corrosive atmosphere of the at least one solenoid valve from a corrosive atmosphere which is one of the charge air or a charge air-containing atmosphere.

5. The fuel supply system according to claim 4 , wherein
the at least one coil of the at least one solenoid valve is also separated or sealed from the corrosive atmosphere, which is one of the charge air or the charge air-containing atmosphere, via the at least one separating element.

6. The fuel supply system according to claim 4 , wherein
the at least one separating element is a separating plate that separates or seals the at least one magnetic plate of the at least one solenoid valve from a chamber of the at least one solenoid valve containing the corrosive atmosphere.

7. The fuel supply system according to claim 4 , wherein
the at least one separating element is a seal that separates and seals a gap between an armature of the valve body of the at least one solenoid valve and a guide for the armature.

8. The fuel supply system according to claim 4 , wherein
the at least one magnetic plate of the at least one solenoid valve is formed out of a corrosion-resistant material or coated with a corrosion-resistant material.

9. An engine, namely gas engine or dual-fuel engine, comprising:
at least one cylinder; and
a fuel supply system, comprising:
at least one solenoid valve configured for use in a corrosive atmosphere, wherein the at least one solenoid valve is configured to introduce gas fuel into charge air or into a charge air line leading to the at least one cylinder of the engine,
wherein the respective solenoid valve configured for use in the corrosive atmosphere comprises:
a valve body;
an actuator with at least one magnetic plate that is exposed to the corrosive atmosphere; and
at least one coil configured to actuate the valve body,
wherein an entirety of the at least one magnetic plate of the respective solenoid valve, which is planar and in direct contact with the corrosive atmosphere, is formed from a corrosion-resistant material or is coated with a corrosion-resistant material.

10. The fuel supply system according to claim 1 , wherein
the at least one magnetic plate is arranged at an axial end of the valve body.

11. The fuel supply system according to claim 4 , wherein
the valve body comprises:
an armature;
an armature plate formed at a first end of the armature; and
a valve plate at a second end of the armature opposite the first end,
wherein the armature has a longitudinal bore configured for pressure equalization between the first and second ends of the armature.

Assignees

• Man Energy Solutions Se

Inventors

• Bär Johannes
• Birner Matthias

Classifications

• F02M51/061 Primary

  using electromagnetic operating means · CPC title

• F02M21/0254 Primary

  Electric actuators, e.g. solenoid or piezoelectric · CPC title

• F02M21/02 Primary

  for gaseous fuels · CPC title

• F02M43/04

  Injectors peculiar thereto · CPC title

• F02M21/0248

  Injectors · CPC title