| 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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| 10/31/1978 | US4122706 Apparatus for computing the mean indicated pressure of an engine |
| 09/12/1978 | US4112879 Process for the regulation of the optimum operational behavior of an internal combustion engine |
| 09/05/1978 | US4111035 Engine knock signal generating apparatus with noise channel inhibiting feedback |
| 08/29/1978 | US4109518 Engine monitoring apparatus |
| 08/15/1978 | US4106447 Engine spark timing system with retard means and minimum burn timer |
| 08/08/1978 | US4104907 Indicated horsepower measurement system for piston engines |
| 06/27/1978 | US4096735 Engine detonation sensor with double shielded case |
| 06/13/1978 | US4094190 Compression measuring apparatus |
| 05/30/1978 | US4091656 Detonation analyzer for piston engine |
| 05/23/1978 | US4090404 Apparatus and methods of detecting injection in a diesel engine |
| 05/09/1978 | US4088916 Piezoelectric pressure pickup |
| 05/09/1978 | US4088011 Gasoline engine piston position tester |
| 04/25/1978 | US4085611 Recording compression testing meter |
| 12/13/1977 | US4062232 Testing compression in engines from starter motor current waveform |
| 12/06/1977 | US4061035 Diaphragm arrangement for pressure transducers |
| 09/27/1977 | US4050306 Method and apparatus for measuring pressures |
| 09/27/1977 | US4050296 Relative compression of an internal combustion engine |
| 09/06/1977 | US4046004 Diesel Engine diagnosing device |
| 08/23/1977 | US4044236 Method and apparatus for controlling the operation of an internal combustion engine |
| 08/02/1977 | US4038868 Transducer for measuring injection pressures of diesel engines |
| 07/19/1977 | US4036050 Engine monitoring apparatus |
| 06/14/1977 | US4028943 Pressure and temperature sensing device |
| 06/07/1977 | US4027532 Compression testing apparatus |
| 03/22/1977 | US4012942 Borderline spark knock detector |
| 01/18/1977 | US4003248 Faulty combustion device for controlled ignition internal combustion engine |
| 01/11/1977 | USRE29109 Apparatus for the determination of internal combustion engine compression pressure |
| 10/05/1976 | US3984760 Measurement of the synchronization of a combustion engine |
| 10/05/1976 | US3983748 Pickup for measuring the maximum pressure in internal combustion engine cylinder |
| 09/14/1976 | US3979960 Compression tester |
| 09/07/1976 | US3978720 Combustion detector for internal combustion engines |
| 09/07/1976 | US3978719 Tachometer without physical connection to internal combustion engine |
| 08/31/1976 | US3977239 Engine diagnosis from frequency components in exhaust |
| 07/27/1976 | US3971332 Vehicle parts indicating instrument |
| 07/20/1976 | US3970862 Polymeric sensor of vibration and dynamic pressure |
| 05/04/1976 | US3955070 Apparatus for measuring variable quantities |
| 04/27/1976 | US3952586 Determining engine compression from starter motor current |
| 04/20/1976 | US3950981 Automatic system for suppressing the ground noise of apparatus for measuring the knocking |
| 04/13/1976 | US3949595 Automatic antiknock adjustment |
| 03/16/1976 | US3943759 Apparatus for measuring compression pressures in internal-combustion engine |
| 03/09/1976 | US3942359 Method and apparatus for measuring knocking in internal combustion engines |
| 02/24/1976 | US3939703 Apparatus for measuring engine cylinder pressures |
| 02/24/1976 | US3939702 Engine torque sensor device |
| 02/17/1976 | US3938378 Engine compression testing |
| 02/10/1976 | US3937087 Transducer for engine fuel injection monitoring |
| 01/27/1976 | US3935558 Surge detector for turbine engines |