Detection device, method for operating stroke piston internal combustion engine, and stroke piston internal combustion engine

Abstract

The invention relates to a detection device, a method for operating a stroke piston internal combustion engine, and a stroke piston internal combustion engine. The detection device is arranged for the stroke piston internal combustion engine which has a cylinder, particularly for a slow-running double-stroke large size diesel motor. In the cylinder, a piston can perform reciprocating motion between a lower dead point and an upper dead point along a working face, wherein a cylinder wall of the cylinder is provided with a lubricant nozzle which is supplied with lubricants by a dosing device so the lubricant can be guided into the cylinder under the action of the lubricant nozzle in a working mode. According to the invention, the detection device comprises a sensor device having a trigger unit which is connected with the dosing device and is signal-connected with a position sensor which is communicated with the interior of the cylinder in an operating condition based on a detection technique so a position of the piston is detected by the position sensor with respect to an axial direction of the cylinder in the operating condition and a reciprocating piston internal-combustion engine is controllable and / or adjustable according to the position of the piston.

Description

Technical field [0001] The present invention relates to a detection device according to the preamble of the independent claims of each category, and a device for operation, especially for lubricating the cylinder wall of a reciprocating piston internal combustion engine, especially a large diesel engine that runs slowly. Working surface method and a reciprocating piston internal combustion engine. Background technique [0002] Large diesel engines are often used as power sources for ships or in stationary operations, such as driving large generators for generating electrical energy. Here, these engines usually work continuously for a long period of time, which places high requirements on working reliability and availability. Therefore, for operators, especially long maintenance intervals, low wear and tear, and economic use of fuel and operating materials are the central criteria for machine operation. In addition, the length of the maintenance interval, availability, and lubri...

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Problems solved by technology

[0028] However, this hitherto used method has a decisive disadvantage: the thus calculated position of the piston in the cylinder has a relatively large error, especially under certain operating conditions, such as under full load, at high rotational speed or Simply intolerable at full RPM or in other extreme operating conditions

This leads to the fact that the position of the piston in the cylinder cannot be accurately calculated even if the position of the piston in the cylinder is accurately related to the crank angle measured at the determined position, because due to the different adjustment of the individual pistons by means of compression shims , the calculation of the position of each piston is supposed to be performed using another correction factor that is itself generally unknown

[0034] However, since these calibration factors are unknown as stated, the errors in the calculations of the position of the piston in the cylinder performed so far are usually further magnified

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