| Patents for G01L 23 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid (3,845) |
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| 04/28/1987 | US4660410 Knock sensor |
| 04/28/1987 | US4660409 Piezoelectric pick-up device for internal combustion engine |
| 04/02/1987 | DE3632221A1 Nullpoint-stabilised charge amplifier |
| 03/25/1987 | CN85108763A High speed reciprocating mechanical pressure indicating graph measuring device |
| 03/24/1987 | US4651698 Adaptive knock control with pulse duration discrimination control |
| 03/12/1987 | WO1987001416A1 Device for monitoring injection of fuel |
| 03/10/1987 | US4649312 Reinforced piezoelectric transducer and pressure sensor using such a transducer |
| 03/03/1987 | US4646563 Transducer for use in detecting the pressure of high pressure fuel in the injection supply pipe of a compression ignition engine |
| 02/24/1987 | US4645965 Cylinder pressure transmitter for an internal combustion engine |
| 02/24/1987 | US4644918 Knock control with AGC having reduced knock dependence |
| 02/24/1987 | US4644784 Suction pipe pressure detection apparatus |
| 02/03/1987 | US4640250 Method and apparatus for engine knock level control |
| 01/20/1987 | US4637362 Method for controlling the supply of fuel for an internal combustion engine |
| 01/20/1987 | US4637247 Method of recognizing knocking signals in a received signal derived from a knocking sensor in an internal combustion engine, and system carrying out the method |
| 01/20/1987 | US4637245 Knock deriving apparatus for internal combustion engines |
| 01/14/1987 | EP0208545A2 Method and apparatus for detecting combustion pressure in engine |
| 01/08/1987 | DE3620733A1 Method for detecting and evaluating knocking combustion, and device for carrying out the method |
| 01/06/1987 | US4633707 Method and apparatus for measuring engine compression ratio, clearance volume and related cylinder parameters |
| 12/31/1986 | CN85103906A Explosion-test type electro/displacement converter device |
| 12/23/1986 | US4630465 Low viscous drag knock sensor |
| 11/26/1986 | EP0202978A1 Knock detection device with a self-adaptive threshold control |
| 11/25/1986 | CA1214554A1 Energy converter performance determination by fixed function blocks |
| 11/11/1986 | US4621519 Ballistics pressure transducer |
| 11/06/1986 | WO1986006477A1 Spark plugs with a pressure measurement device |
| 11/05/1986 | EP0200709A2 Pressure transducer |
| 11/05/1986 | EP0200033A2 Stall surge detector |
| 11/04/1986 | US4620438 Cylinder pressure transmitter for an internal combustion engine |
| 10/21/1986 | US4618856 Stall surge detector |
| 10/14/1986 | US4616502 Knocking detection system for internal combustion engine |
| 09/02/1986 | US4608855 Circuit for the recognition of knocking of an Otto engine |
| 08/19/1986 | US4606312 System for detecting abnormalities in gas engines |
| 08/05/1986 | US4604544 Piezoelectric pressure indicator |
| 07/29/1986 | US4602506 Combustion pressure sensor arrangement |
| 07/22/1986 | US4601197 Peak combustion pressure timing detector for internal combustion engine |
| 07/22/1986 | US4601196 Engine combustion chamber pressure sensor |
| 07/22/1986 | US4601193 Measuring circuit for ionic current measurement |
| 07/16/1986 | EP0187385A2 High pressure transducer |
| 07/15/1986 | US4600993 Measuring barometric pressure with a manifold pressure sensor in a microprocessor based engine control system |
| 07/15/1986 | US4599982 Knock control apparatus for internal combustion engines |
| 07/09/1986 | EP0187081A1 Process and processing sequence of the analogous output signal of a sensor |
| 07/08/1986 | US4598681 Automotive engine with knock sensor |
| 06/18/1986 | EP0184666A2 Knocking sensor |
| 06/11/1986 | EP0184536A2 Absolute compression test |
| 06/10/1986 | US4593553 Method for detecting engine knock in internal combustion engines |
| 06/04/1986 | EP0183307A2 Electronic device for feeding an ion pump with two different tensions and for improved measuring of the pressure in said pump |
| 06/04/1986 | EP0183265A2 Suction pipe pressure detection apparatus |
| 06/04/1986 | EP0183239A2 System and method for detecting the condition of combustion in a combustion engine |
| 05/20/1986 | US4590400 Piezoelectric cylinder pressure transmitter |
| 05/13/1986 | US4587840 Pressure sensor for installation in a wall element subjected to pressure of a fluid medium, such as a hydraulic pressure line, e.g. in diesel fuel injection systems |
| 05/10/1986 | CN85108352A Exhaust system for the combustion gases of an internal combustion engine |
| 05/07/1986 | EP0179983A1 Shock wave sensor |
| 04/30/1986 | EP0179611A2 Cylinder pressure transmitter for an internal combustion engine |
| 04/29/1986 | US4585552 System for the measurement of the difference between two fluid flows in separate ducts |
| 04/29/1986 | US4584869 Method and apparatus for detecting knock in a spark ignition engine |
| 04/16/1986 | CN85201335U Shock absorber for pressure gage |
| 04/02/1986 | EP0175915A2 Method of controlling knock in an internal-combustion engine |
| 03/26/1986 | EP0175449A2 Engine combustion chamber pressure sensing |
| 03/25/1986 | US4578611 Piezoelectric stress wave transducer with boron nitride piezo support |
| 03/19/1986 | EP0026198B1 Correcting device for the carburation of engines of vehicules during transitional phases of operation |
| 03/11/1986 | US4574616 Vibration detecting apparatus |
| 03/05/1986 | EP0172983A2 Method and apparatus for measuring engine compression ratio, clearance volume and related cylinder parameters |
| 03/04/1986 | US4574265 System for monitoring the sensor responsive to a periodic condition in an internal combustion engine |
| 02/25/1986 | US4572141 Method of controlling intake air quantity for internal combustion engines |
| 02/19/1986 | EP0171639A1 Device for elaborating knock signals |
| 02/05/1986 | EP0170256A2 System for detecting abnormalities in gas engines |
| 02/04/1986 | US4567751 Knocking detection device in diesel engine |
| 01/28/1986 | US4567395 Piezoelectric pressure transmitter for an internal combustion engine |
| 01/28/1986 | US4566316 Washer type pressure sensor |
| 01/28/1986 | US4566309 Apparatus and method for monitoring a pressure sensor |
| 01/22/1986 | EP0168488A1 Piezoelectric sensor |
| 01/21/1986 | US4565171 Knock controller for an internal combustion engine |
| 01/21/1986 | US4565087 Method and apparatus for recognition of knocking in an internal combustion engine |
| 01/15/1986 | EP0168313A1 Piezoelectric transducer and pressure sensor using such a transducer |
| 01/07/1986 | US4562813 Knock control system |
| 01/07/1986 | US4562740 Vibration sensor and the method of and apparatus for manufacture thereof |
| 01/07/1986 | US4562728 Absolute compression test |
| 12/27/1985 | EP0165675A2 Apparatus for measuring thermal stress of pressure-tight tube |
| 12/24/1985 | US4559821 High pressure transducer |
| 12/17/1985 | US4558674 Knock control apparatus equipped with altitude compensation function |
| 11/27/1985 | EP0162798A2 Vibration sensor and the method of and apparatus for manufacture thereof |
| 11/13/1985 | EP0160713A1 Pressure sensor, in particular for monitoring combustion injection systems |
| 11/12/1985 | US4552111 Engine knocking detecting means |
| 10/29/1985 | US4549430 Sensor |
| 10/09/1985 | EP0157340A2 Method for controlling the supply of fuel for an internal combustion engine |
| 09/10/1985 | US4539841 Method of determining engine cylinder compression pressure and power output |
| 09/03/1985 | US4538454 Method for discriminating motor/combustion pressures in an I.C.E. combustion chamber |
| 08/28/1985 | EP0153004A2 Method of determining engine cylinder compression pressure and power output |
| 08/27/1985 | US4537066 Aeroengine test cells |
| 08/27/1985 | US4537065 Device for detection of abnormality in pressure detector for internal combustion engine |
| 08/07/1985 | EP0076265B1 Method and device for detecting irregular combustion phenomena in an engine |
| 07/18/1985 | WO1985003127A1 Piezoelectric sensor |
| 07/17/1985 | EP0148321A2 Pressure sensor with a resistor |
| 07/17/1985 | EP0148308A2 Engine knock control apparatus |
| 07/09/1985 | US4527525 Control method and apparatus for combating knocking in internal combustion engines |
| 07/09/1985 | US4527422 Apparatus for determining the value of a cyclically varying parameter of an internal combustion engine |
| 07/03/1985 | EP0146668A2 Engine knock control apparatus |
| 06/25/1985 | US4525781 Method of determining fluctuations in indicated mean effective pressure of engine and apparatus therefor |
| 06/25/1985 | US4524625 Pressure sensor |
| 06/19/1985 | EP0145480A2 Cylinder pressure transmitter for an internal combustion engine |
| 06/19/1985 | EP0145146A2 Combustion pressure sensor |