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Method for modifying detected camshaft position, controller, internal combustion engine and vehicle

A camshaft, internal combustion engine technology, applied in the field of vehicles with such an internal combustion engine, can solve problems such as difficulty in evaluating compensation accuracy, and achieve the effect of simplifying the method

Pending Publication Date: 2021-02-23
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the problem with these methods is that it is only difficult to assess the accuracy of the compensation and thus only guarantee to a limited extent whether the correction values ​​are actually suitable for adequately compensating the phase difference

Method used

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  • Method for modifying detected camshaft position, controller, internal combustion engine and vehicle
  • Method for modifying detected camshaft position, controller, internal combustion engine and vehicle
  • Method for modifying detected camshaft position, controller, internal combustion engine and vehicle

Examples

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Embodiment Construction

[0063] figure 1 Shows a schematic diagram of a vehicle 100 with an internal combustion engine 1 having the following features: Fresh air or fresh gas is fed into the combustion chamber 5 of a cylinder 6 via an intake manifold 2 between a throttle valve 3 and a The intake valves extend between 4. The movement of the intake valve 4 is controlled by an adjustable intake camshaft 7 . In the cylinder 6 or in the intake manifold 2 , the supplied fresh air is mixed with fuel which is combusted in the cylinder and which now drives the piston 8 . The piston movement is transmitted via the crank 9 to the crankshaft 10, the rotation of which is used to drive the vehicle 100 through a drive train not shown.

[0064] After combustion, the piston 8 expels the exhaust gas from the combustion chamber 5 through the exhaust valve 11 into the exhaust manifold 12 and on to the turbine 13 of the exhaust gas turbocharger, which may optionally be equipped with Wastegate or adjustable turbo geomet...

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Abstract

The invention relates to a method for modifying a detected camshaft position, comprising: detecting an actual gas signal in a gas space associated with a camshaft, said actual gas signal being adaptedto the detected camshaft position; processing the gas signal into an actual gas standard; modeling a plurality of simulated gas standards, wherein the simulated gas standards are respectively matchedwith rated camshaft positions; comparing the simulated gas standard with the actual gas standard; determining a simulated gas standard having the minimum deviation from the actual gas standard; determining an actual camshaft position, the actual camshaft position corresponding to a simulated gas standard having a minimum deviation from the actual gas standard; determining a camshaft position correction value according to the difference between the determined actual camshaft position and the detected camshaft position; and determining the corrected camshaft position by correcting the detectedcamshaft position with a camshaft position correction value. The invention also relates to an engine controller, an internal combustion engine and a vehicle for carrying out the method.

Description

technical field [0001] The invention relates to a method for modifying a detected camshaft position of a camshaft in an internal combustion engine. The invention also relates to a controller which is arranged and designed to carry out such a method, to an internal combustion engine for carrying out the method, and to a vehicle having such an internal combustion engine. Background technique [0002] In modern internal combustion engines, especially gasoline engines, adjustable camshafts and valve controls are increasingly used for precise air control. Therefore, the control phase, control time and control curve of the intake valve and the exhaust valve can be flexibly designed in the meantime. [0003] A so-called camshaft adjuster is used to adjust the control phase, which can control the angle of the cams on the camshaft through infinite adjustment. Variable valve control systems (for example the so-called Valve-Tronic) additionally make it possible to vary the valve lift...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/27G06K9/62F02D41/14G06F113/08G06F119/14
CPCG06F30/20G06F30/27F02D41/0002F02D41/1401G06F2113/08G06F2119/14F02D2041/001F02D2041/1433F02D2041/1437F01L2800/14F01L2820/041F01L2820/042F01L2820/043G06F18/22F01L2800/09F02D41/1406F02D41/2464F02D2200/0411F02D2400/11F02D41/1405F02D2041/288F02D41/1448F02D2200/0406F02D41/2432F01L1/344F01L2001/0537F02D41/2474F02D41/009F02D13/0238F02D13/0249F01L2001/34496F02D13/0203F01L13/0015F01L2800/18F01L1/047F01L1/46F01L2201/00
Inventor M.马祖尔J.杰施克J.福斯特H.布卢梅N.格哈特
Owner VOLKSWAGEN AG
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