Starting device for gas internal combustion engine

Abstract

The purpose of the present invention is to provide a starting device for a gas internal combustion engine that further improves safety, damage prevention, durability and reliability by discharging unburned gas accumulated in the gas internal combustion engine and exhaust passage, thereby preventing abnormal combustion in the gas internal combustion engine during ignition start-up of the gas internal combustion engine. A starting device of a gas internal combustion engine (1) having an air starting device (30) is characterized by being provided with: a means for detecting the rotational speed of the gas internal combustion engine (1); a compressed air introduction means (5) that supplies compressed air to cylinders according to the ignition timing of the gas internal combustion engine (1); a compressed air supply means (3) that supplies compressed air to the compressed air introduction means (5); and a controller (2) that has a cumulative rotational speed setting device (21), which enables an operator to arbitrarily set a threshold value for a cumulative rotational speed, and, on the basis of the means for detecting the rotational speed, stops the compressed air supply means (3) from supplying compressed air when the set cumulative rotational speed has been reached.

Description

technical field [0001] The invention relates to a starting device for a gas internal combustion engine with an idle air rotation device. Background technique [0002] In subchamber-type lean premixed gas internal combustion engines (hereinafter; referred to as gas internal combustion engines), in order to check the cylinder before operating the air starter, ensure the lubrication of the cylinder and the sliding surface of the piston sliding in the cylinder, and In order to reduce the trouble of starting the standard, there is a starting method that uses compressed air (not containing fuel gas) into the cylinder to rotate the gas internal combustion engine with idle air. [0003] During idle air rotation, when the start command (manual) of the air starter is issued, first, the idle air rotation starter valve is opened and the fixed rotation is completed, the air starter operates, and when the gas internal combustion engine reaches a certain speed, the gas internal combustion ...

AI Technical Summary

Problems solved by technology

[0006] In this situation, when the gas internal combustion engine is switched to fuel gas ignition, the remaining combustion gas will burn abnormally, causing damage to the gas internal combustion engine and the exhaust passage.

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