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1. 发明授权

EP3390808B1 VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DER EINSPRITZRATE EINES EINSPRITZVENTILS 有权转让
公开(公告)号：EP3390808B1
公开(公告)日：2020-09-23
申请号：EP16801516.2
申请日：2016-11-28
申请人： Robert Bosch GmbH
发明人： MAJER, Clemens , FISCHER, Thomas , HARTUNG, Iris
IPC分类号： F02M65/00

2. 发明公开

EP3390808A1 VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DER EINSPRITZRATE EINES EINSPRITZVENTILS 有权转让
公开(公告)号：EP3390808A1
公开(公告)日：2018-10-24
申请号：EP16801516.2
申请日：2016-11-28
申请人： Robert Bosch GmbH
发明人： MAJER, Clemens , FISCHER, Thomas , HARTUNG, Iris
IPC分类号： F02M65/00
摘要： The invention relates to a method for determining the injection rate of an injection valve (1) using a mathematical model which is based on measurement values comprising the stroke (x) of a piston (3) that delimits a measurement chamber (2) during the injection of a test fluid (4) into the measurement chamber (2). The injection rate is corrected on the basis of an additional measurement value. According to the invention, the pressure (pa) in an adapter volume (5), via which the injection valve (1) is connected to the measurement chamber (2), is used as an additional measurement value for correcting the injection rate. The invention further relates to a device for determining the injection rate of an injection valve.

3. 发明公开

EP3298266A1 VORRICHTUNG ZUR MESSUNG DER EINSPRITZRATE, VERFAHREN ZUR HERSTELLUNG EINER SOLCHEN VORRICHTUNG SOWIE MESSVERFAHREN 有权转让
标题翻译：测量注射速率的装置，生产这种装置的方法和测量方法
公开(公告)号：EP3298266A1
公开(公告)日：2018-03-28
申请号：EP16710984.2
申请日：2016-03-22
申请人： Robert Bosch GmbH
发明人： MAJER, Clemens , FISCHER, Thomas , SANDER, Wolfgang , HARTUNG, Iris
IPC分类号： F02M65/00
摘要： A device (1) for measuring the injection rate dm(t)/dt of an injection valve (2) for a fluid (4a), wherein m(t) is the injection quantity of the fluid (4a) as a function of the time (t), having a measurement volume (3) which is closed off on all sides and which is filled with a test fluid (4), having an opening (5a) in one wall (5) of the measurement volume (3) for the purposes of receiving the injection valve (2) such that the injection valve (2), in the installed position, projects with at least one injection opening (2a) into the measurement volume (3), and having a pressure sensor (6) which is arranged in the measurement volume (3), wherein correction means (8, 8a, 9a, 9b, 9c) are provided for determining the propagation time of a pressure wave (12), which originates from the injection opening (2a) and which propagates through the test fluid (4), to the pressure sensor (6) and for correcting the measured injection rate dm(t)/dt, taking said propagation time into consideration, to give a rectified injection rate dm'(t)/dt. A method for producing the device (1), wherein the characteristic map (8a) is determined by way of a fluid-dynamic simulation of the time-dependent and position-dependent local speed of sound c(t,x) in a partial volume of the measurement volume (3) which encompasses at least the path (11) from the injection opening (2a) to the pressure sensor (6), which simulation is based on at least one time-dependent boundary condition for the pressure (p) in the measurement volume (3) and/or for the injection quantity (dm). A method for measuring the injection rate dm(t)/dt of an injection valve (2) for a fluid (4a).

4. 发明公开

EP4314541A1 VORRICHTUNG ZUM MESSEN DER EINSPRITZMENGE VON EINSPRITZSYSTEMEN 审中-实审
公开(公告)号：EP4314541A1
公开(公告)日：2024-02-07
申请号：EP22708440.7
申请日：2022-02-08
申请人： Robert Bosch GmbH
发明人： MAJER, Clemens , KAMMERER, Thomas Marc , HUELL, Wolfgang , HARTUNG, Iris
IPC分类号： F02M65/00

5. 发明授权

EP3298266B1 VORRICHTUNG ZUR MESSUNG DER EINSPRITZRATE SOWIE MESSVERFAHREN 有权转让
公开(公告)号：EP3298266B1
公开(公告)日：2020-08-05
申请号：EP16710984.2
申请日：2016-03-22
申请人： Robert Bosch GmbH
发明人： MAJER, Clemens , FISCHER, Thomas , SANDER, Wolfgang , HARTUNG, Iris
IPC分类号： F02M65/00

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