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Component, chamber device and transfer device having the component

A transfer device and component technology, which is applied in fuel injection devices, special fuel injection devices, charging systems, etc., can solve the problems of expensive and bellows, and achieve simple manufacturing, good sealing effect, and improved sealing effect

Active Publication Date: 2009-08-05
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But such a bellows is relatively labor-intensive and expensive

Method used

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  • Component, chamber device and transfer device having the component
  • Component, chamber device and transfer device having the component
  • Component, chamber device and transfer device having the component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Components with the same structure and function are denoted by the same reference numerals in the figures.

[0027] An injection valve 1 has an actuator 2 which is functionally connected via a transmission device 3 to a nozzle needle 4 . The actuator 2 is preferably formed as a piezoelectric actuator. However, it can be another actuator that generates a stroke. The transfer device 3 preferably converts the deflection of the actuator 2 in the direction of the nozzle needle 4 such that a deflection of the actuator 2 in the direction of the nozzle needle 4 is transmitted as an amplified deflection of the nozzle needle 4 . Furthermore, the transfer device preferably also compensates for temperature-induced changes in the length of the actuator. Depending on its position, the nozzle needle closes or releases a nozzle 41 in the injector 1 and thus controls the fuel metering.

[0028] According to the exemplary embodiment, the transmission device 3 can also transmit a defle...

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Abstract

A transmission device, in particular for an injection valve, which transmits the deflection of an actuator, the transmission device having a housing (5) with a first recess in which a first and Second piston (6,7). The first and second pistons (6, 7) are functionally connected by a fluid via at least one transfer chamber (10, 11). This functional connection serves to slide the second piston (7) when the first piston (6) moves and vice versa. The transfer chamber (10) is hydraulically coupled to a compensation chamber (22) through a sealing gap (21), and the pressure difference between the transfer chamber (10, 11) and the compensation chamber (22) is compensated with delay. Furthermore, the transfer device includes a cavity device with a cavity, which is the compensation chamber (22), a cavity housing which is the housing (5), and a piston which is the first piston ( 6). The cavity device includes a device having a first body with a recess and a second body guided in the recess, and an elastic body (50) joined between the first and second The recess between the bodies thus closes and seals the intermediate space between the first and second bodies at this location. The elastic body (50) has a first groove (61) which extends at least partially along the recess at a distance from the recess wall.

Description

technical field [0001] The invention relates to an assembly comprising a first body with a recess and a second body guided into the recess. The invention also relates to a method for manufacturing the assembly. The invention also relates to a cavity arrangement comprising a cavity with a cavity housing having a recess, the cavity arrangement also having a piston and the aforementioned assembly. The invention also relates to a transmission device having the cavity arrangement, in particular for an injection valve, which transmits the deflection of an actuator. Background technique [0002] A transmission device can be arranged in an injection valve of an internal combustion engine and transmit the deflection of an actuator, preferably to a nozzle needle. Piezoelectric actuators are often used as actuators for this purpose, which, due to their very fast response time to control signals, are very suitable for precise control of fuel metering and, if necessary, a cylinder of a...

Claims

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Application Information

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IPC IPC(8): F16J15/32F16J15/56F02M61/16F02M51/06F02M59/46F02M45/02F02M63/00
CPCF02M2200/16F02M61/167F02M51/0603F02M2200/703F02M2200/9015F02M2200/704F02M45/02
Inventor H·弗罗伊登伯格W·许尔茨M·西梅特H·青克G·齐格勒A·勒尔H·P·阿诺P·德尔普
Owner CONTINENTAL AUTOMOTIVE GMBH
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