Method for starting a large diesel engine and large diesel engine

A diesel engine, a large-scale technology, applied in the direction of engine starting, engine motor starting, engine components, etc., can solve the problem of high starting air consumption, and achieve the effect of economical use and low consumption

Inactive Publication Date: 2017-03-08
WINTERTHUR GAS & DIESEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, this high safety margin leads to a rather high consumption of starting air

Method used

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Embodiment Construction

[0035] The invention will now be described in more detail with the help of embodiments of the invention.

[0036] The invention relates to a method for starting a large diesel engine. The large diesel engines are used, for example, as the main propulsion unit of a ship, or in stationary operation, for example, to drive a large generator to produce electricity. The large diesel engine has at least one cylinder, but typically up to for example up to fourteen cylinders, which are fired during operation according to a predetermined firing sequence which determines the firing sequence of the cylinders. The movement of the pistons rotates a crankshaft connected to the pistons, for example via piston rods, crossheads and connecting rods. The crankshaft is connected, for example, to a propeller for driving a boat or to a generator for producing electrical energy.

[0037] In each block, the top side of the piston and the block head, together with the barrel wall of the block, define...

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PUM

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Abstract

A method is proposed for starting a large diesel engine having a crankshaft and at least one cylinder with a combustion chamber for the combustion of a fuel and with a piston for reciprocating movement between a top dead center position and a bottom dead center position for driving the crankshaft, said method comprising injecting compressed starting air consecutively in each cylinder according to a firing sequence when the piston of the respective cylinder is in the region of the top dead center position, determining a control parameter which is indicative for the firing of the fuel in the respective cylinder and cutting off the compressed starting air for the respective cylinder when the control parameter indicates the firing of the fuel in the respective cylinder. In addition, a large diesel engine, especially a large two-stroke diesel engine, is proposed having a control device being designed for performing this method.

Description

technical field [0001] The invention relates to a method for starting a large diesel engine and to a large diesel engine, in particular a large two-stroke diesel engine, having a control device designed to carry out the method. Background technique [0002] Large diesel engines, which can be designed as two-stroke or four-stroke engines with longitudinal scavenging (e.g. large two-stroke diesel engines), are often used as the main propulsion unit of ships, or in stationary operation, for example, to drive large generators to produce electricity. As a rule here, the engine runs at a constant speed for a considerable period of time, which places high demands on operational reliability and availability. For this reason, long and predictable intervals between maintenance, low wear and economical use of fuel and operating materials are central criteria for machine operation for the operator. [0003] Especially in view of the ever-increasing requirements regarding environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N9/04F02B75/32F02D37/02
CPCF02B75/32F02D37/02F02N9/04F02D41/0025Y02T10/30F02B61/045F02B75/02F02B2075/025F02D41/062F02D43/00F02N11/08
Inventor G·苏得沃伊
Owner WINTERTHUR GAS & DIESEL
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