Title (en)

COMBUSTION CHAMBER PIEZOELECTRIC PRESSURE SENSOR PROVIDED WITH A PRESSURE-TRANSMITTING PIN

Title (de)

PIEZOELEKTRISCHER BRENNRAUM-DRUCKSENSOR MIT EINEM DRUCKÜBERTRAGUNGSSTIFT

Title (fr)

CAPTEUR DE PRESSION PIEZO-ELECTRIQUE DE CHAMBRE DE COMBUSTION POURVU D'UNE BROCHE DE TRANSMISSION DE PRESSION

Publication

EP 1797407 A1 20070620 (DE)

Application

EP 05779167 A 20050819

Priority

• EP 2005054097 W 20050819
• DE 102004047143 A 20040929

Abstract (en)

[origin: WO2006034928A1] The invention concerns a sensor (SE) consisting of single-crystal and piezoelectric material (1) for measuring pressure (6) in an internal combustion engine combustion chamber, comprising a pressure-transmitting pin. Said pressure-transmitting pin is in the form of a preheating pencil (4) slidably mounted and projecting into the combustion chamber and the sensor (SE) is force-closed to the preheating pencil (4). The sensor (SE) is preferably placed between the preheating pencil (4) and a fixed stop (5). The single-crystal piezoelectric material (1) of the sensor (SE) is advantageously lithium niobate (LiNbO<sub

IPC 8 full level

G01L 23/10 (2006.01); F02P 19/02 (2006.01); F23Q 7/00 (2006.01); G01L 23/22 (2006.01)

CPC (source: EP KR US)

F23Q 7/00 (2013.01 - KR); G01L 23/10 (2013.01 - EP KR US); G01L 23/22 (2013.01 - EP KR US); G01L 23/222 (2013.01 - EP US); F23Q 2007/002 (2013.01 - EP US)

Citation (search report)

See references of WO 2006034928A1

Citation (examination)

• JP H05172679 A 19930709 - NGK SPARK PLUG CO
• EP 0549346 A2 19930630 - NGK SPARK PLUG CO [JP]

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

DE 102004047143 A1 20060406; EP 1797407 A1 20070620; JP 2008514940 A 20080508; KR 20070062986 A 20070618; US 2009025468 A1 20090129; WO 2006034928 A1 20060406

DOCDB simple family (application)

DE 102004047143 A 20040929; EP 05779167 A 20050819; EP 2005054097 W 20050819; JP 2007533987 A 20050819; KR 20077007226 A 20070329; US 66332305 A 20050819