TH31332B - Impact display device for internal combustion engines - Google Patents

Abstract

The DC60 engine ECU unit consists of a band-pass filter (1) that isolates vibration. Vibration-isolated band A, band-pass filter (2) vibration-isolated on the second band B, band-pass filter (3) vibration-isolated third band C, and the Vibration-isolated band through (4) at the fourth band D comprising bands one to three AC. The engine ECU will display whether the shock has occurred or not based on the vibration waveform. The vibration of the fourth frequency band D and the vertex value in the magnitude of the vibration in the waveform are Synthesized of bands one to three, the engine ECU consists of a band-pass filter (1) that isolates oscillations. Vibration-isolated band A, band-pass filter (2) vibration-isolated on the second band B, band-pass filter (3) vibration-isolated third band C, and the Vibration-isolated band through (4) at the fourth band D comprising bands one to three AC. The engine ECU will display whether the shock has occurred or not based on the vibration waveform. The vibration of the fourth frequency band D and the vertex value in the magnitude of the vibration in the waveform are Synthesized of the first to third frequency bands

Claims (4)

1. Impact display device for internal combustion engine consists of Route for internal combustion engine vibration detection, First isolation path for vibration isolation, especially for shocks at the frequency band. Determined from such vibrations that are detected, a secondary pathway for separation of vibrations, including specific vibrations, shocks and vibrations, which are considered noise elements. At the frequency band including the aforementioned frequency band and wider than that specified frequency band Out of shaking Such a shock was detected. Path for detection, the waveform of the vibration with the specified crank angle range according to the Vibrations separated by the aforementioned separation pathway. Pathways for pre-stored storage of engine vibration waveforms Such an internal combustion engine, and a way of displaying that shocks have occurred in the combustion engine. Inside such or not As a result of the comparison between the waveforms being detected, these are trapped by vibrations including vibration. Especially shock and vibration, which is considered Assembly of interference And the stored waveform with the magnitude of the vibration Said at the specified frequency band 2. Shock display device for internal combustion engine according to claim 1, where the aforementioned frequency band is indicated in several numbers. 3. Impact display device for internal combustion engine according to claim 2, where the multiple number of the aforementioned frequency bands is the same as in the amplitude of the frequency. 4. Shock display devices for internal combustion engines in accordance with any one of the terms 1-3 are also included; First sensing path for first time detection where the magnitude of the vibration which is The first extraction method is the most valuable and the second sensing path is for the first time detection where the magnitude of the vibration which is Separated by one such extraction method is the most valuable. In a period which is defined by the first such time by which the way of display Including a way for displaying that the impact that occurs in the machine The internal combustion motor or not, as a result of the comparison between the detected waveform and the stored waveform. In the state where such second time and time at which the magnitude of the oscillation The vibrations become the greatest in the waveform. Such storage has been made to match.