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곽인재(Injae Kwak),김신명(Shinmyong Kim),고동현(Donghyun Ko),문용현(Yonghyun Moon) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
To achieve more than ever reinforcement of exhaust gas emission regulation on recent days, numerous OBD calibration engineer have hard worked to avoid miss and wrong diagnostic detection with mal-function emission system and component. In this study, the evaporation diagnostic of gasoline fuel leakage delivery system with statistical analysis approach to avoid various calibration results by calibration engineer’s experience and capability with conventional approach. To begin with system analysis which is to clarify system input and output, noise parameter impact on the system. Each vehicle test was performed with variation of fuel level which was came from system analysis, test results are treated as a sample, so we calibrated OBD thresholds using by various statistical methods. It also need to verify that sample could be represent a population then make robust OBD calibration adapted by confidence level and interval to ensure that no miss and wrong diagnostic during vehicle life cycle.
곽인재(Injae Kwak),김상훈(SangHoon Kim),노형태(HyeongTae Noh) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
Electrical two wheeler have become familiar in our daily life world widely these days to reduce a carbon emission and global warming issue. ISO 26262 is an international standard for functional safety in the automotive industry. The standard applies to electrical and electronic systems consisting of hardware and software components in vehicles and development process to maintain vehicle lifecycle. This topic have been highly recommended on the electrical two wheeler to avoid hazard of the high voltage system to protect driver and pedestrian but also for the safety on the system. The framework of functional safety should need to duplexing design on the hardware to monitor system conditions. In this paper, we have focus on the concept design of functional safety for the conventional electrical two wheeler system with application software in vehicle control unit. The control of vehicle behavior and coordination control with other control units through brake and throttle signal and several digital switches. This study is the first step of functional safety system for the electrical two wheeler.
전기이륜차 시스템 안전성 확보를 위한 고장진단 개발에 대한 연구
곽인재(Injae Kwak),김상훈(SangHoon Kim),권홍구(HongGu.Gwon),육성진(SungJin.Yuk),김성윤(SeongYun Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Electrical two wheeler have become familiar in our daily life world widely these days to avoid Corona Pandemic and environment protection. It have some field issues what is an after-market is not mature compare with automotive market. Some of export company does not have any service center or provide a customer compliance service. The Korea government agency would like to be establish the after-market of electrical two wheeler so that the manufacture have to prepare life cycle management of their system and important components. In this paper, we would like to introduce the DSM(Diagnosis System Management) which is interface diagnostic results of each control units and report to HMI(Human Hachine Interface). The final output of DSM is a relevant vehicle operation control with regard to a diagnostic result. This diagnostic system have kept to longer endurance of key components and safety of end-user. This study is the first step of scientific diagnosis system for electrical two wheeler, and we expect that this activity will be a market standard to prevent disordered current field issues.
교환형 배터리를 활용한 전기삼륜차 전력분배 시스템 구성에 대한 연구
김재인(JaeIn Kim),곽인재(InJae Kwak),노형태(HyeongTae Noh),진실로(SilLo Jin) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
The transition to eco-friendly mobility is accelerating around the world based on the recent national-level pollution-free vehicle conversion policy and raising environmental awareness. In order to achieve carbon neutrality in 2050, a rapid response is required, and attention is focused on the trend of mobility in Asia, which emits large amounts of greenhouse gas in the transportation sector. Therefore, if we take the lead in the development of two-wheeled and three-wheeled vehicles, which are the main means of transportation in many countries in East and Southwest Asia and are the main targets of vehicle electrification policies, it will be an opportunity to preoccupy major markets. In this study, performance tests were conducted with different battery systems mounted on the same electric three-wheeled vehicle, and the results were compared and analyzed to find ways to improve marketability.
배터리 교환형 시스템에서 전기 차량의 전력 분배 제어에 대한 연구
진실로(Sillo Jin),곽인재(Injae Kwak),노형태(Hyeongtae Noh),김재인(Jaein Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
It has been always an issue that charging the electric vehicle takes too much time unlike ICE vehicles. It is main reason slows down the transition from ICE vehicles to electric vehicles. To overcome this problem, Battery Swap Station, so-called BSS, has become most important platform in small vehicle markets like electric two-wheeler and three-wheeler. And, it is mandatory to standardize battery and to lower the weight of battery to manage BSS platform. Many corporation is on the process to launch various products within BSS platform. However, standardizing and lightening the battery forces electric vehicles to be low-powered to increase one-charge mileage. To operate high-powered electric vehicle like three-wheeler using BSS, connecting batteries in series and parallel can be solution. This research deals with what are the system components, pros and cons, and risks to connect battery pack in series and parallel, what are the solutions, what are verification and evaluation results of this vehicle….
김상훈(Sanghoon Kim),곽인재(Injae Kwak),변세희(Sehee Byun),김대우(Daewoo Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
This study relates to the design of a vehicle control system for controlling an electric two-wheeler system with a drive device operating at a high voltage. In recent years, Micro-mobility has been gaining traction as the new means of mobility of the future, and it is expected that in the future the adoption of short-range use or non-owned shared vehicles in the mobility market will expand. Among the micro-mobility, electric two-wheelers are eco-friendly and economical, and in addition to this, vehicle sharing must be accompanied by a battery exchange system and data-based services. In this case, the electric two-wheeler system generally consists of 5 sub-systems : the powertrain system, the energy management system, the cooling system, the vehicle control system, and the connectivity system. In order to control such an electric two-wheeler system, it is necessary to design an appropriate system platform for the element system to be controlled and a design process for each controller. In this paper, we have focused on designing a control system architecture and control method to ensure that the control is done appropriately from the perspective that the vehicle control system, which is the top-level controller, views the subsystem as the object of control. The sub-control modules of the vehicle control system were constituted and the functional elements of each module were defined to enable organic cooperative control between the control objects through architectural design and verification according to the V-Process. This is expected to improve the productivity and quality of more diverse and complex electric two-wheeler systems.
전기이륜차 커넥티드 차량 제어 시스템 개발에 대한 연구
김상훈(Sanghoon Kim),곽인재(Injae Kwak),변세희(Sehee Byun),김대우(Daewoo Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
With the continuous development of Internet of Things technology, the field of connected cars, which is its application field, is also attracting attention. A connected car is a vehicle that has connectivity with an external network using communication technologies such as LTE and 5G, and is an active vehicle control system that collects data, generates information, and exchanges control data with each other for real-time processing. In the case of electric two-wheeled vehicles, it is also applied as a major technology, and it uses the LTE / BLE communication method through the modem and Bluetooth device mounted on the VCU, which is the top-level controller of the vehicle, and uses the web server, smartphone app, Bluetooth keyfob. In addition, it includes vehicle control functions such as theft detection notification, keyfob command reception, and remote blocking of vehicle operation, as well as vehicle speed, mileage, and warning lights, which are basic functions of the passenger car cluster, and the status information of the vehicle is stored on the server through the modem, as well as the GPS-based vehicle movement location record and driver usage information such as the users vehicle driving pattern. In this way, it is necessary to supply power at all times through an auxiliary battery for functional operation in a situation where the driver is not on board, which requires close cooperation with the transition of the operating mode of the vehicle. In this paper, we propose a software architecture design for connectivity services of electric two-wheelers and present the possibility through actual vehicle verification tests.