• Title/Summary/Keyword: 불꽃감지센서

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A Study for Failure Examples Including with Timing Belt, Camshaft Position Sensor and Ignition Coil Damage of LPG Vehicle Engine (액화석유가스 자동차 엔진의 타이밍벨트, 캠샤프트포지션센서, 점화코일 손상과 관련된 고장사례에 대한 연구)

  • Lee, IL Kwon;Kook, Chang Ho;Ham, Sung Hoon;Kim, Jee Hyun;Lee, Jae Gang;Han, Seung Min;Hwang, Woo Chan;Hwang, Han Sub;Moon, Hak Hoon;Lee, Jeong Ho
    • Journal of the Korean Institute of Gas
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    • v.26 no.3
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    • pp.54-59
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    • 2022
  • This paper is a purpose to study and analyze the failure examples for timing belt, camshaft position sensor and ignition coil of LPG automotive engine. The first example, whe the service man install the front case bracket of engine, he excessively tightened up a 12mm bolt for being fixed of brackct. As a results, the bolt was separated from joint part so that it was put in between the crankshaft sprocket. Therefore the belt was broken off because of interference between timing belt and sprocket tooth. The second example, it verified the disharmony phenenomen of engine that the gap of the camshaft position sensor and camshaft senseing point assembled on cylinder head part was small more than iregular value so that the it was generated senseing damage phenomenon by pulse signal misconduct. The third example, it was found the engine disharmony phenomenon that the fire in the ignition coil was leaked by inner damage of Number 2 ignition coil.Therefore, the the manager of a car throughtly have to inspect not in order to arise the failure symptoms.

The Control System of Wood Pellet Boiler Based on Home Networks (홈 네트워크 기반의 펠릿 활용 난방 보일러 제어시스템)

  • Lee, Sang-Hoon
    • Journal of the Institute of Convergence Signal Processing
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    • v.15 no.1
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    • pp.15-22
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    • 2014
  • This paper presents the implementation of a control system of pellet boiler using wood pellet as carbon neutral material. The system also has the additional features to provide remote controlling and monitoring based on home networking technology through either public switched telephone networks or mobile communication networks. It consists of three kinds of sub-modules; a main controller provides basic and additional features such as a setting of temperature, a supplying of wood pellet, a controlling of ignition and fire-power, and a removing of soot. The second is temperature controller of individual rooms which is connected to the main controller through RS-485 links. And interface modules with PSTN and mobile networks can support remote controlling and monitoring the functions. The test results under the heating area of $172m^2$ show a thermal efficiency of 93.6%, a heating power of 20,640kcal/hr, and a fuel consumption of 5.54kg/hr. These results are superior to those of the conventional pellet boilers. In order to obtain the such high performance, we newly applied a 3-step ignition flow, a flame detection by $C_dS$ sensor, and a fire-power control by fine controlling of shutter to our pellet boiler.