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Method and device for determining energy supply data for an actuator of an injection valve of a motor vehicle

A technology for motor vehicles and actuators, which is applied to machines/engines, fuel injection control, mechanical equipment, etc., and can solve the problems of not being able to meet the strict requirements for the accuracy of fuel injection quantity, slow calibration, and large expenditures. Effects of precise determination, reduced burden, high system stability

Active Publication Date: 2022-04-05
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, empirically determining the required influencing variables to produce a specified characteristic diagram requires significant expenditure
Furthermore, corrections to the base values ​​stored in the characteristic map are carried out relatively slowly using closed-loop control systems during the corresponding motor vehicle operation, with the result that stringent requirements regarding the accuracy of the fuel injection quantities cannot often be ensured

Method used

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  • Method and device for determining energy supply data for an actuator of an injection valve of a motor vehicle
  • Method and device for determining energy supply data for an actuator of an injection valve of a motor vehicle
  • Method and device for determining energy supply data for an actuator of an injection valve of a motor vehicle

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Experimental program
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Embodiment Construction

[0017] figure 1 A diagram of a current-controlled piezoelectric output stage that can be used in a method for determining energy supply data for an injection valve of a motor vehicle is shown.

[0018] The piezo output stage has a 2-quadrant buck and boost converter (Buck-Boost-Konverter), which includes a buck converter T1 , D2 and a boost converter T2 , D1 . The transistor T1 of the buck converter implemented as a field effect transistor is actuated by the control signal s1 . Transistor T2 of the boost converter, also implemented as a field effect transistor, is actuated by the control signal s2. The control signals s1 and s2 are provided by the control unit, e.g. in conjunction with Figure 6 explained.

[0019] The junction point between diodes D1 and D2 of the buck and boost converter is connected to the intermediate capacitor C Z terminals, the intermediate capacitor C Z The other terminal of the ground. Voltage U Z (hereinafter referred to as the intermediate vol...

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Abstract

The invention relates to a method and a device for determining energization data for an actuator of an injection valve of a motor vehicle, wherein a control unit is supplied with input data and the control unit determines the energization data taking into account the input data, wherein the control unit Energy supply data were also determined by using a polynomial regression model (4).

Description

technical field [0001] The invention relates to a method and a device for determining energy supply data for an actuator of an injection valve of a motor vehicle. The actuator is especially an electromechanical or electromagnetic transducer, for example a piezoelectric transducer or a piezoelectric actuator. Background technique [0002] Electromechanical transducers are used in injection valves for internal combustion engines, the nozzle needle being actuated directly or indirectly by the piezoelectric transducer. Very stringent requirements are imposed on these injection valves with regard to the accuracy and robustness of the injection quantity under all operating conditions and over the entire service life of the respective motor vehicle. [0003] The energization time of such electromechanical transducers is generally defined as a function of the operating point and essentially depends on the amperage, the travel to be provided, the corresponding current temperature co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/20F02D41/14
CPCF02D2041/2068F02D2041/1433F02D2041/2027F02D2041/2041F02D41/20F02D41/2096F02D41/401
Inventor T.加吉佐M.考舍H-J.韦霍夫
Owner VTESCO TECH GMBH
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