CYLINDER INTERNAL PRESSURE SENSOR

PROBLEM TO BE SOLVED: To provide a cylinder internal pressure sensor capable of suppressing a sensor element from being broken even if abnormal combustion occurs.SOLUTION: A cylinder internal pressure sensor 1 has a housing 2, a diaphragm 10, a force transmission member composed of a rod 9 and a gla...

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Bibliographic Details
Main Authors ASANO MASAHIKO, TSUKADA KAZUYUKI, ISHITA HIROSHI, NAKAYAMA MASAO
Format Patent
LanguageEnglish
Japanese
Published 15.12.2016
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
MECHANICAL ENGINEERING
PHYSICS
TESTING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a cylinder internal pressure sensor capable of suppressing a sensor element from being broken even if abnormal combustion occurs.SOLUTION: A cylinder internal pressure sensor 1 has a housing 2, a diaphragm 10, a force transmission member composed of a rod 9 and a glass block 8, and a sensor element 7. The cylinder internal pressure sensor 1 transmits cylinder internal pressure acting on the diaphragm 10 to the sensor element 7 through the force transmission member, and also detects the cylinder internal pressure on the basis of a resistance value of the sensor element 7. The diaphragm 10 of the cylinder internal sensor 1 has a cylinder part 11 and a bottom part 12, which is fixed to the housing 2 apart from one end of the housing 2. Then the bottom part 12 has a center part 14, an opposite part 15, a connection part 16 provided between the opposite part 15 and center part 14 and connecting both together, and a curved part 17 provided between the opposite part 15 and cylinder part 11 and connecting both together, the connection part 16 having a larger spring constant than the curved part 17.SELECTED DRAWING: Figure 1 【課題】異常燃焼が生じた場合であってもセンサ素子の破損を抑制できる筒内圧センサを提供する。【解決手段】筒内圧センサ１は、ハウジング２と、ダイヤフラム１０と、ロッド９及びガラスブロック８からなる力伝達部材と、センサ素子７とを有している。この筒内圧センサ１は、ダイヤフラム１０に作用した筒内圧を力伝達部材を介してセンサ素子７に伝えるとともに、センサ素子７の抵抗値に基づいて筒内圧を検出する。この筒内圧センサ１のダイヤフラム１０は、有底筒状をなし、筒部１１と、底部１２とを有し、底部１２がハウジング２の一端から離間した状態で同ハウジング２に固定されている。そして、底部１２は、中心部１４と、対向部１５と、対向部１５と中心部１４との間に設けられて両者を接続する接続部１６と、対向部１５と筒部１１との間に設けられて両者を接続する湾曲部１７と、を有し、接続部１６のばね定数は湾曲部１７のばね定数よりも大きい。【選択図】図１
Bibliography:Application Number: JP20150095460