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Method and device for controlling the supply of lubricant to the cylinder bearing face of a piston of a reciprocating engine

A piston engine and lubricant technology, which is applied in the direction of engine lubrication, control of lubricant pressure, pressure lubrication safety device, etc., can solve the problem of not being able to know the indication of lubricant supply on the monitoring cylinder working surface, etc.

Inactive Publication Date: 2007-03-07
沙勒工业自动化技术两合公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] In large piston engines, especially two-stroke piston engines, used in industry (diesel power stations) and especially in shipbuilding, the problem arises that the cylinder running surfaces of the pistons in the cylinders must be lubricated by means of a separate supply of lubricant
No indications are known from this prior art regarding the monitoring of the cylinder face and possible lubricant supply

Method used

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  • Method and device for controlling the supply of lubricant to the cylinder bearing face of a piston of a reciprocating engine
  • Method and device for controlling the supply of lubricant to the cylinder bearing face of a piston of a reciprocating engine

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Embodiment Construction

[0020] FIG. 1 shows a typical system diagram of a piston engine 2 in which a piston 6 can move up and down in a cylinder 4 . The piston 6 is mounted on a piston rod 8 which is movably mounted in a fixed guide 10 . In the example shown, the guide device 10 is designed as a sealing sleeve, which forms a gas-tight arrangement between the underside of the piston 6 and the crankcase 11 . The lower end of the piston rod 8 is connected to the crankshaft 14 via a connecting piece 13 provided with a slider 12 .

[0021] In order to monitor the lubricant film between the piston 6 and the cylinder face 16 of the cylinder 4, there is an electrical circuit 18 in which a wire 20 is connected to the cylinder wall of the cylinder 4 and another wire 22 to the current collector of the piston rod 8 The active sealing sleeve 10 is connected. For this purpose, the gland 10 is electrically insulated with respect to the engine material. According to a further refinement not shown in the figure, t...

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Abstract

The invention relates to a method and a device for controlling the supply of lubricant to the cylinder bearing surface (16) of a piston (6) of a reciprocating engine (2), especially a two-stroke reciprocating engine. In order to improve the control of the quantity of lubricant to be supplied, the electrical continuity between the cylinder wall (4) and the piston (6) is observed and the quantity of lubricant supply is gradually reduced as long as the spurious signals of the electrical continuity indicate a rupture of the lubricant film on the cylinder bearing surface (16), whereupon the amount of lubricant supply is raised to a value in which the spurious signal disappears.

Description

technical field [0001] The invention relates to a method according to claim 1 for controlling the supply of lubricant to the cylinder running surfaces of the pistons of a piston engine, in particular a two-stroke piston engine, and a method according to claim 11 for carrying out this method device. Background technique [0002] In large piston engines, in particular two-stroke piston engines, used in industry (diesel power plants) and especially in shipbuilding, it is a problem that the cylinder running surfaces of the pistons in the cylinders must be lubricated with a separate supply of lubricant. In such piston engines, whose cylinders can for example have a size of up to one meter and a stroke of up to three meters, it is difficult to determine the required lubricant quantity. Here people rely on empirical data, and increase it by 10% to 20% for the sake of safety. Known empirical data are, for example, 0.2 to 0.6 g / kWh. This means that for a 30000kW medium power engin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/18F01M1/08
CPCF01M1/18F01M1/08F01M2001/083F01M1/16
Inventor 沃纳·沙勒
Owner 沙勒工业自动化技术两合公司
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