Naprava za hitro preizkušanje žarilnih svečk z integriranim tipalom tlaka

Podobnik, Miha (author), Vončina, Danijel (mentor)

Diplomsko delo opisuje razvoj naprave za hitro preizkušanje elektronskega vezja žarilne svečke s tipalom tlaka. Naprava nadomešča dizelski motor – vzpostaviti mora takšne tlačne razmere, kot so v valju med običajnim delovanjem motorja. Zasnoval sem napravo s pnevmatskim cilindrom, ki ustvarja silo na konico svečke. Cilinder je krmiljen z elektromagnetno proženim ventilom, silo pa nastavljamo z regulatorjem tlaka. Razvil sem krmilno elektroniko, ki proži ventil, njena dodatna funkcija pa je napajanje svečke. Elektronika potrebuje za delovanje enosmerno napajanje in proženje preko funkcijskega generatorja. Izhodni signal svečke spremljamo z osciloskopom. Preveril sem ponovljivost pri delovanju naprave, ki se je izkazala za dobro, in predpisal uporabo etalona za zagotavljanje kakovosti meritev.

• Language: Slovenian
• Keywords: žarilna svečka s tipalom tlaka, pnevmatski cilinder, elektromagnetno prožen ventil, regulator tlaka, krmilna elektronika, funkcijski generator, osciloskop, ponovljivost, etalon
• Work type: Undergraduate thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2015
• PID: 20.500.12556/RUL-71757
• Publication date in RUL: 13.07.2015

Secondary language

• Language: English
• Title: Device for fast testing of glow plugs with integrated pressure sensor

Abstract

The thesis describes development of a device for quick testing of pressure sensor glow plug's electronic circuit. The device subtitutes a diesel engine – it has to establish such pressure conditions as are in a cylinder during normal engine operation. I designed a device with a pneumatic cylinder that applies force to the tip of a glow plug. The cylinder is controlled by an electromagnetically actuated valve and the force is adjusted by a pressure regulator. I developed control electronics that actuates the valve. Its additional function is powering the glow plug. DC power supply and trigger with a function generator are needed for the circuit to operate. The output of a glow plug is monitored with an oscilloscope. I checked the device's operation repeatability which proved to be good and prescribed usage of a standard for quality assurance of measurements.

• Keywords: pressure sensor glow plug, pneumatic cylinder, electromagnetically actuated valve, pressure regulator, control electronics, function generator, oscilloscope, repeatability, standard