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Four stroke internal combustion engine and thereto-related method

A technology for four-stroke internal combustion engines and turbines, applied in the field of control of four-stroke internal combustion engines and computer program products, can solve the problems of low utilization rate of discharge energy, slowness, and opening of poppet valve without discussing, so as to increase energy recovery and increase possibilities Effect

Inactive Publication Date: 2019-02-05
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them discuss the slow opening of poppet valves, or the low efficiency of bleed energy utilization

Method used

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  • Four stroke internal combustion engine and thereto-related method
  • Four stroke internal combustion engine and thereto-related method
  • Four stroke internal combustion engine and thereto-related method

Examples

Experimental program
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Embodiment Construction

[0044] Aspects of the invention will now be described more fully. Like numbers refer to like elements throughout. Well-known functions or constructions are not necessarily described in detail for brevity and / or clarity.

[0045] figure 1 A four-stroke internal combustion engine (ICE) 2 according to various embodiments is schematically shown. The ICE 2 comprises at least one cylinder arrangement 4 , an exhaust duct 6 , and at least one turbine 8 . figure 1 Also shown is a vehicle 1 comprising a four-stroke internal combustion engine (2) according to any one of the aspects and / or embodiments disclosed herein. The vehicle (1) may be eg a heavy vehicle such as a truck or a bus.

[0046] The at least one cylinder arrangement 4 comprises a piston 10, a cylinder bore 12, an exhaust arrangement 14, an intake arrangement 16, and a fuel injection arrangement 18 and / or ignition means. A piston 10 is arranged to reciprocate in a cylinder bore 12 . exist figure 1 , the piston 10 is ...

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PUM

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Abstract

Herein a four stroke internal combustion engine (2) comprising at least one cylinder arrangement (4), a crankshaft (20), a camshaft (25), and a turbine (8), is disclosed. The camshaft (25) is synchronised with the crankshaft (20) to rotate at a same rotational speed as the crankshaft (20). A linkage arrangement (40) is configured to prevent the motion of the valve head (30) every alternate rotation of the camshaft (25), such that the exhaust opening (28) remains closed during a compression stroke of the piston (10). Also a method for controlling a four stroke internal combustion engine (2) isdisclosed.

Description

technical field [0001] The invention relates to a four-stroke internal combustion engine. The invention also relates to a method for controlling a four-stroke internal combustion engine. According to further aspects, the invention relates to a computer program for carrying out a method for controlling a four-stroke internal combustion engine, and a computer program product for carrying out the method for controlling a four-stroke internal combustion engine. Background technique [0002] A piston of a four-stroke internal combustion engine ICE performs four strokes, ie, an intake stroke, a compression stroke, a power stroke, and an exhaust stroke, in a cylinder of the ICE. A traditional four-stroke ICE has the same geometric compression ratio and expansion ratio, that is, the compression stroke has the same length as the expansion stroke. The working medium is compressed from the piston's bottom dead center BDC to the piston's top dead center TDC during the compression stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L9/02F01L1/46F01L1/053F01L1/08F01L1/18F01L13/00F01L9/12
CPCF01L1/08F01L1/181F01L1/46F01L13/0047F02D41/0007F01L2001/0537F01L1/053Y02T10/12F01L9/12F01L1/06F01L1/12F01L2750/00F02B37/20
Inventor E·奥洛夫松A·达尔J·林迪瑞德H·霍格伦德T·埃利亚森P·斯托尔哈马尔J·艾斯波福尔斯
Owner SCANIA CV AB