| 摘要 |
PCT No. PCTDE/89/00086 Sec. 371 Date Sep. 7, 1990 Sec. 102(e) Date Sep. 7, 1990 PCT Filed Feb. 15, 1989 PCT Pub. No. WO89/09384 PCT Pub. Date Oct. 5, 1989.In a pressure transducer (11), the diaphragm (14) is fastened at the front side of the housing (10) facing the combustion chamber of an internal combustion engine by weld connections. The pressure acting on the diaphragm (14) is transmitted via the plunger (16) to a sensor block (18) including a plurality of piezoelectrically acting crystals (19, 20). The quartz disks (19, 20) are glued together with one another and with an intermediate electrode (21) as well as with the housing (10) of the pressure transducer (11) by a conducting glue. The plunger (14), the abutment (23) and the piezoelectrically acting crystals (19, 20) are connected in the housing (10) so that force transmission to the crystals (19, 20) occurs without mechanical pretensioning. The pressure transducer (11) is virtually free of dynamic temperature errors and enables a relatively exact determination of the pressure curve with respect to time in the combustion chamber of an internal combustion engine in long-term operation.
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