IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0441411
(2007-07-13)
|
등록번호 |
US7930935
(2011-04-12)
|
우선권정보 |
DE-2006-0 2006 043 607(2006-09-16) |
국제출원번호 |
PCT/EP2007/057226
(2007-07-13)
|
§371/§102 date |
20090316
(20090316)
|
국제공개번호 |
WO08/031656
(2008-03-20)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Continental Aktiengessellschaft
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
0 |
초록
▼
Disclosed is a method for diagnosing the function of a level control system (1) of a motor vehicle, comprising at least one valve (2a, 2b, 14, 26) and a control unit (10). An exchange of pressure medium from one side of the valve to the other side of the valve is possible when the valve is open, and
Disclosed is a method for diagnosing the function of a level control system (1) of a motor vehicle, comprising at least one valve (2a, 2b, 14, 26) and a control unit (10). An exchange of pressure medium from one side of the valve to the other side of the valve is possible when the valve is open, and an exchange of pressure medium is prevented when the valve is closed. The valve carries out a change of state, a variable (4, I) influencing the valve output is measured during the change of state, the measured variable influencing the output of the valve is compared with a reference curve, a family of characteristics or a limit value in the control unit (10), and based on the comparison in the control unit (10) it can be established if the valve has carried out the change of state.
대표청구항
▼
The invention claimed is: 1. A method for diagnosing the functioning of a motor vehicle level control system (1) comprising a control unit (10) and at least one electrically actuated valve (2a, 2b, 14, 26) with an open state permitting an exchange of pressure medium from the one side of the valve to
The invention claimed is: 1. A method for diagnosing the functioning of a motor vehicle level control system (1) comprising a control unit (10) and at least one electrically actuated valve (2a, 2b, 14, 26) with an open state permitting an exchange of pressure medium from the one side of the valve to the other side of the valve and with a closed state preventing an exchange of pressure medium, the method comprising the steps ofchanging the state of the valve (2a, 2b, 14, 26) while the valve is in the motor vehicle level control system of a motor vehicle during an operation of the motor vehicle,measuring at least one quantity (U, I) influencing the output of the valve (2a, 2b, 14, 26) during the change of state,making a comparison between the measured quantity (U, I) influencing the output of the valve (2a, 2b, 14, 26) and a reference,determining in the control unit (10), on the basis of the comparison, whether the valve (2a, 2b, 14, 26) has performed the change of state,wherein the reference is a member of the group consisting of an electric current reference curve, a family of electric current characteristics, and an electric current limit value and wherein the method is performed whenever a level control action is to be performed.
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