Method for controlling a piezoelectric fuel injector of an internal combustion engine of a vehicle comprising a step for polarizing the piezoelectric actuator
US-2015369187-A1 · Dec 24, 2015 · US
Method and device for operating an injection valve
US9200580B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9200580-B2 |
| Application number | US-201013265624-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2010 |
| Priority date | Apr 21, 2009 |
| Publication date | Dec 1, 2015 |
| Grant date | Dec 1, 2015 |
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Abstract
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In a method for operating an injection valve having a longitudinal axis, an injection needle, a control valve and an actuator embodied as a solid body actuator, wherein the actuator acts on the control valve and the control valve acts on the injection nozzle, various pre-defined quantities of electrical energy are supplied to the actuator in a plurality of adaptation flows in order to modify an axial length of the actuator. This electrical energy is defined such that an axial position of the injection nozzle remains unchanged. In correlation with the respective adaptation flow, and following the energy supply associated with the respective adaptation flow, a first and second voltage value are detected and a voltage differential value is then determined which is compared with a pre-defined threshold value and, on the basis of the comparison, at least one control of the actuator is adapted to the injection of fluid.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for operating an indirectly-driven injection valve having a longitudinal axis, a nozzle needle in a valve space, a control valve in a control space and an actuator which is embodied as a solid actuator in an actuator space, wherein the actuator is designed to act on the control valve, and the control valve is designed to act on the nozzle needle, wherein the nozzle needle is designed to prevent, in a closed position, a flow of fluid through at least…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02D41/2096Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9200580B2 cover?
- In a method for operating an injection valve having a longitudinal axis, an injection needle, a control valve and an actuator embodied as a solid body actuator, wherein the actuator acts on the control valve and the control valve acts on the injection nozzle, various pre-defined quantities of electrical energy are supplied to the actuator in a plurality of adaptation flows in order to modify an…
- Who is the assignee on this patent?
- Brandt Martin, Continental Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F02D41/2096. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 01 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).