Two-stroke diesel engine starting, braking and reverse method, its device and application

A diesel engine, two-stroke technology, applied in the direction of starting device with mechanical power storage, engine components, engine control, etc., can solve problems such as braking or reversing the difficulty of two-stroke diesel engines

Inactive Publication Date: 2005-05-11
WAERTSILAE SCHWEIZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the force acting on the propeller is directly transmitted to the two-stroke diesel engine, which makes it more difficult to start, brake or reverse the two-stroke diesel engine

Method used

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  • Two-stroke diesel engine starting, braking and reverse method, its device and application
  • Two-stroke diesel engine starting, braking and reverse method, its device and application
  • Two-stroke diesel engine starting, braking and reverse method, its device and application

Examples

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Embodiment Construction

[0018] figure 1 The schematic two-stroke diesel engine includes a cylinder block 6 with a plurality of cylinders, each cylinder with an injection pump 3 equipped with delivery lines 3a, 3d, and a crankcase 7 with a crankshaft 2 installed. The excitation and regulating device 8 is connected to the

[0019] - connected to the angle sensor 9 for measuring the angle of rotation of the crankshaft 2,

[0020] - connected to an exhaust valve 4a

[0021] - connected to a compressed air valve 4b

[0022] - connected to jet pump 3,

[0023] - and connected to a sensor 12 for measuring the pressure in the compressed air volume 11 .

[0024] Compressed air is delivered from the compressed air container 11 to the compressed air valve 4b via the line 11b. An exhaust pipe 13 is provided after the exhaust valve 4a.

[0025] Two-stroke diesel engines receive air through the intake ports, which are located in the cylinders but are not visible in the diagram.

[0026] FIG. 2 a shows the p...

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PUM

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Abstract

In the method of starting, braking and reversing a two-stroke diesel engine, a compressed gas, especially compressed air, is supplied to at least one cylinder in such a way that the piston in the cylinder is accelerated or braked by the resulting pressure change, depending on the angle of rotation of the crankshaft , the cylinder has at least one exhaust valve, which is repeatedly opened and closed corresponding to the crank angle, in order to start the closing side (22b) of the exhaust valve (4a) moves to the top dead center (OTP), so that the cylinder basically Maintaining the non-compressed state, for braking, the opening side (22a) of the exhaust valve (4a) moves to top dead center (OTP) to create a premature pressure drop in the cylinder.

Description

field of invention [0001] The invention relates to a method for starting, braking and reversing of a two-stroke diesel engine. The invention also relates to a set of devices for implementing the method. Background technique [0002] Reciprocating piston internal combustion engines, hereinafter also referred to as diesel engines, are known which start, brake or reverse self-igniting with compressed air. For example, starting a large-scale diesel engine as a marine power plant in such a way that in the first working phase, compressed gas, especially compressed air, is blown into the cylinder in such a way that the piston located therein starts to operate, thereby driving the diesel engine. After the rotation speed, fuel is supplied to the cylinders in the second working phase, and the cylinders are ignited to further operate the internal combustion engine. The diesel engine can also be braked with compressed gas, such as compressed air where appropriate, until it stops. If ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N9/04F02B3/06F02B75/02F02D13/04F02D13/08F02D27/00F02D45/00
CPCF02B3/06F02B2075/025F02F2007/0097F02N9/04F02B25/00
Inventor F·波切特
Owner WAERTSILAE SCHWEIZ AG
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