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Large low-speed turbocharged two-stroke uniflow scavenging internal combustion engine and method of operation

A turbocharger and engine technology, applied in the direction of internal combustion piston engine, combustion engine, engine control, etc., can solve problems such as increasing fuel consumption and emissions

Pending Publication Date: 2021-05-18
曼能解决方案(曼能解决方案德国股份公司)分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the consequences of this lack of recalibration are increased fuel consumption and emissions

Method used

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  • Large low-speed turbocharged two-stroke uniflow scavenging internal combustion engine and method of operation
  • Large low-speed turbocharged two-stroke uniflow scavenging internal combustion engine and method of operation
  • Large low-speed turbocharged two-stroke uniflow scavenging internal combustion engine and method of operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0167] In the following detailed description, a compression ignition internal combustion engine will be described with reference to a large two-stroke low speed turbocharged internal combustion (diesel) engine in an example embodiment. figure 1 , figure 2 and image 3 A large low-speed turbocharged two-stroke diesel engine with crankshaft 8 and crosshead 9 is shown. image 3A large low-speed turbocharged two-stroke diesel engine with intake and exhaust systems is shown. In this example embodiment, the engine has six cylinders 1 arranged in a row. Large low-speed turbocharged two-stroke diesel engines typically have between four and fourteen cylinders in a row carried by the engine frame 11 . The engine can be used, for example, as the main engine of an ocean-going ship or as a stationary engine for operating a generator in a power station. The total output of the engine may for example be in the range of 1,000 kW to 110,000 kW.

[0168] In this example embodiment, the en...

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PUM

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Abstract

A large low-speed turbocharged two-stroke uniflow scavenging internal combustion engine and method of operation is provided, the engine having a plurality of cylinders (1) and an exhaust-driven turbocharger (5) pressurizing scavenging for the cylinders (1), the cylinders having: an exhaust valve (4), an exhaust valve actuation system (46) for actuating the exhaust valve (4), a fuel delivery system (30) for delivering an amount of first fuel to the associated cylinder (1) for generating a pressure signal of a particular cylinder indicative of the pressure in the associated cylinder (1). The method includes: individually performing closed-loop control on fuel quantities of cylinders, timing of fuel entry / injection start and / or timing of exhaust valve closing based on pressure signals of specific cylinders and based on a common setpoint for all cylinders or based on setpoints of respective specific cylinders, the setpoint of each particular cylinder is an adjustment of each particular cylinder of the common setpoint.

Description

technical field [0001] The present invention relates to a large low speed turbocharged two stroke single flow scavenged internal combustion engine having a crosshead and having multiple cylinders, and a method of operating such an engine. Background technique [0002] Large low-speed turbocharged two-stroke single-flow scavenged internal combustion engines with crossheads are commonly used in the propulsion systems of large ships or as prime movers in power plants. [0003] This type of modern engine is fully electronically controlled, that is, during engine operation, both the intake / injection of fuel and the opening and closing of the exhaust valve can be controlled by the electronic control system to ensure that the engine is running smoothly. Operate optimally under given operating conditions. [0004] Engines are calibrated at the factory to ensure they meet all performance requirements such as power, fuel efficiency, emissions, noise / vibration levels and reliability. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/18F02B37/00F02D9/06F02D35/02F02D41/14F02D41/40F02D31/00F02D43/00
CPCF02B75/18F02B37/00F02D9/06F02D35/023F02D41/14F02D41/401F02D41/40F02D31/007Y02T10/12Y02T10/30F02D41/0007F02B25/04F02B37/005F02D19/06F02D41/0025F02D41/008F02D2200/101F02B2075/025
Inventor 汉斯·斯卡夫特·拉尔森彼得·托夫特·特耶尔
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司