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Method for adjusting the rotational angle position of the camshaft of a reciprocating internal combustion engine in relation to the crankshaft

A technology for adjusting pistons and camshafts, applied in valve devices, mechanical equipment, engine components, etc., can solve problems such as non-existence, and achieve the effect of preventing damage

Active Publication Date: 2010-06-09
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these are limited for the start-up phase of the internal combustion engine, because during start-up the measured values ​​for the phases of the partial camshafts are not yet available

Method used

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  • Method for adjusting the rotational angle position of the camshaft of a reciprocating internal combustion engine in relation to the crankshaft
  • Method for adjusting the rotational angle position of the camshaft of a reciprocating internal combustion engine in relation to the crankshaft
  • Method for adjusting the rotational angle position of the camshaft of a reciprocating internal combustion engine in relation to the crankshaft

Examples

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Effect test

Embodiment Construction

[0035] refer to figure 1 , the adjusting device of the piston internal combustion engine relative to the camshaft 3 of the crankshaft 5 includes a speed change transmission mechanism 1, which is constituted as a three-shaft transmission, has a transmission shaft fixed with the crankshaft, and a driven shaft fixed with the camshaft and an adjustment shaft. The variable gear can be a planetary gear, for example an epicyclic gear and / or a swash plate gear.

[0036] The transmission shaft is connected in a rotationally fixed manner to the camshaft gear 2 , which forms a drive connection in a known manner via a chain or toothed belt to a rotationally fixed crankshaft gear on the crankshaft 5 of the internal combustion engine. The driven shaft and the camshaft 3 are connected in a torque-proof manner. The rotor of the adjustment shaft and the motor 4 is connected in a torque-proof manner. The transmission 1 is integrated in the sleeve of the camshaft gear 2 .

[0037] In order t...

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Abstract

The invention relates to a method for adjusting the rotational angle position of the camshaft of a reciprocating piston of an internal combustion engine in relation to the crankshaft. The crankshaft is drivingly connected to the camshaft by means of an adjusting drive, which is embodied as a triple-shaft gear comprising a drive shaft which is fixed to the crankshaft, a drive shaft which is fixed to the camshaft and an adjusting shaft which is drivingly connected to an electromotor. A stop element is connected to the drive shaft and a counter-stop element is connected to the camshaft. The crankshaft rotational angle measuring signal and a position measuring signal for the rotational angle of the adjusting shaft are detected during the starting step of the internal combustion engine. A phaseangle signal for the position of the rotational angle of the camshaft, based on the initial position, in relation to the camshaft is determined with the aid of the rotational angle measuring signal,the position measuring signal and a gear variable of the triple-shaft gear. After the immobilisation of the crankshaft and the camshaft in a reference position in relation to each other and after thedetection of the reference position, the phase angle in relation to the reference position is measured and is controlled to a target-value signal.

Description

technical field [0001] The invention relates to a method for adjusting the rotational angle position of the camshaft of a piston type internal combustion engine relative to the crankshaft, especially during the starting process of the internal combustion engine, the crankshaft establishes a transmission connection with the camshaft through a speed change transmission mechanism as a three-axis The transmission is composed of a drive shaft fixed to the crankshaft, a driven shaft fixed to the camshaft, and an adjustment shaft that forms a transmission connection with the motor. Background technique [0002] This method is known from DE 41 10 195 A1. Here the angular position of the camshaft relative to the crankshaft is adjusted with the help of an electric motor that drives the adjustment shaft between the crankshaft and the camshaft of the three-shaft transmission. The camshaft gear is designed on the transmission shaft of the three-shaft transmission, which is driven by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/352
CPCF01L1/3442F01L2800/01F01L2820/041F01L1/352F01L1/344
Inventor 明·纳姆·阮海科·德尔霍尔格·施托克
Owner SCHAEFFLER TECH AG & CO KG
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