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Multi-cylinder internal combustion engine and method for operating such a multi-cylinder internal combustion engine

A technology of internal combustion engines and cylinders, applied in the direction of engine components, engine ignition, machines/engines, etc., can solve problems such as energy defects

Active Publication Date: 2013-07-03
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use of large valve overlap is generally increased at low engine speeds by maintaining closing time while opening valves later, this method maintains engine torque at low engine speeds; however, reduced by reduced pumping in the low load range Energy deficit caused by shortened valve duration at high engine rotational speeds due to fuel consumption

Method used

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  • Multi-cylinder internal combustion engine and method for operating such a multi-cylinder internal combustion engine
  • Multi-cylinder internal combustion engine and method for operating such a multi-cylinder internal combustion engine
  • Multi-cylinder internal combustion engine and method for operating such a multi-cylinder internal combustion engine

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Embodiment Construction

[0012] In an engine, the cylinder head is often used to hold the valve train. To control charge changes, engines often use control elements and actuators to actuate the control elements. Against the background of charge changes, combustion gases are expelled through the exhaust port and fresh mixture or fresh air is introduced through the intake port, filling the combustion chamber. To control charge changes, reciprocating valves are used as control elements in almost all four-stroke engines. The reciprocating valves undergo an oscillating reciprocating motion during engine operation and thereby open and close the intake and exhaust ports. The valve train is the valve actuation mechanism that moves the valves. Valve actuation devices often include a camshaft on which a plurality of cams are arranged.

[0013] The function of the valve gear is to open and close the intake and exhaust ports of the cylinder at just the right time, where the purpose is to quickly open a flow cr...

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Abstract

A linearly aligned four-cylinder internal combustion engine system operated in a 1-3-4-2 sequence, comprising a cylinder head connected with a cylinder block wherein each cylinder has at least one exhaust port to discharge exhaust gasses via an exhaust gas discharge system, for which an exhaust gas pipe is connected at each exhaust port; wherein the exhaust gas pipes of the cylinders that merge in stages into a common exhaust gas pipe and the exhaust gas discharge system emerges outside of the cylinder head. Thus exhaust gas from consecutive ignitions in adjacent cylinders is separated for a distance throughout the engine head to reduce mutual influencing in adjacent cylinders with consecutive ignitions.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German application 102012200014.3 filed January 2, 2012, the entire contents of which are hereby incorporated by reference for all purposes. technical field Background technique [0003] A multi-cylinder internal combustion engine of a motor vehicle generally comprises at least one cylinder head connected to the mounting surface of the cylinder block and four cylinders arranged linearly along the longitudinal axis of the cylinder head, wherein each cylinder is equipped with an ignition device for activating an external ignition device. Each cylinder typically includes at least one exhaust port for expelling exhaust gas from the cylinder through an exhaust exhaust system, with each exhaust pipe connected to each exhaust port. In the text of the following description the phrase "engine" includes, in particular, gasoline engines equipped with external ignition. An engine has at least...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/42F01N13/08F02P9/00
CPCF02P9/00F01N13/105
Inventor K·S·库巴奇G·巴奇A·布罗伊尔
Owner FORD GLOBAL TECH LLC
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