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Research on Information Security Risk Evaluation of Vehicle Information System Based on Fuzzy- BP-GA

  • Beihang University - Yinghui wang, Guizhen Yu, Yunpeng Wang, Haojie Ji, Hongmao Qin, Pengcheng Wang
  • Technical Paper
  • 2018-01-1642
Published 2018-08-07 by SAE International in United States
With the development of the intelligent connected vehicle , the security of vehicle information system is facing a number of aspects of threats.The entire intelligent connected vehicle information system is consist of the ECUs, sensors, CAN bus,In-Vehicle Infotainment system (IVI), T-BOX as well as TSP(Telematics Service Provider) cloud platform,etc. These assets will be facing many threats such as eavesdropping, tampering, counterfeiting and replay,etc. The information security risk evaluation of automobile information system is the precondition of realizing the information security of automobile full life cycle,an asset in the vehicle information system may exist a variety of potential security vulnerabilities,and each security vulnerability may be also exploited by counterfeiting, denial of service,etc.According to the current situation that the risk assessment of automobile information system is qualitatively ,quantitatively, linear, nonlinear and so on, lots of factors make the security assessment of it very complicated and difficult. So in this paper, the fuzzy theory, BP neural network technology and genetic algorithm (Fuzzy-BP-GA) are introduced into the risk assessment of ICV information system.Combining with the information security risk assessment…

Lane Detection System for Night Scenes

  • Chongqing University of Technology - Yuanzhi Hu PhD, Junsheng Liu
  • Tianjin University - Song Gao PhD
  • Show More
  • Technical Paper
  • 2018-01-1617
Published 2018-08-07 by SAE International in United States
Most of algorithms of lane detection mainly aim at the scene of daytime. However, the camera is very sensitive to the light which causes such algorithms are unstable for the lane detection at night. This paper proposed a lane detection algorithm that largely improves the lane detection’s performance when it used at night. Step one is image processing. According to the feature of lane’s color, we focus on the image’s white and yellow parts and transform the original image to grayscale image. When the image’s value of grayscale is relatively small, an image enhancement method will be used to improve the contrast between lane line and road. Then, extracting a region of interesting from image (ROI) according the fixed location of camera mounted inside the car. In ROI, we used a creative algorithm named Correlation filter to remove image noise and remain the feature of lane. In step one, the filter matrix looks like “[0 1 1;-1 0 1;-1 -1 0]”. Final, extracting the line by the Hough transform and acquiring the equation of lane…

An Optimization Approach to Conduction Emission Test of T-BOX

  • CATARC - jiang li
  • Technical Paper
  • 2018-01-1643
Published 2018-08-07 by SAE International in United States
For the exceed standard limits problem of T-BOX in radiation emission(RE) and conduction emission(CE) test process, π filter is designed and added to the positive polar and negative polar of power supply based on the analysis of hardware circuit. The conduction emission test results of T-BOX after optimized can meet the requirements of GB/T 18655-2010 standard.

Automatic Azimuth Alignment for Automotive Radar

  • HUAYU Automotive Systems Co., Ltd. - Jianying Guo, Shuangsuo Sun, Kun Li
  • Technical Paper
  • 2018-01-1606
Published 2018-08-07 by SAE International in United States
The world has witnessed the rapid development of the Advanced Driver Assist System (ADAS) industry over the past few years. Radar, as one of the most important sensors in ADAS due to the high penetration, all-weather characteristic and low cost, is studied intensively and will be applied on a large scale. Automobile radar has many applications like ACC (Advanced Cruise Control) BSD (Blind Spot Detection), LCA (Lane Change Assistant), etc., and the accuracy of the radar target detection influences the performance of ADAS. In general, range, velocity, azimuth angle and other target attributions are measured by the automotive radar, and the accuracy of the azimuth angle is more easily affected by the environment than other attributions. For the automotive radar, it is usually equipped either near a front bumper, or near a left rear and right rear bumper. Due to the small accidents which happened frequently and/or vibration in the course of vehicle driving, it will regularly lead to a misalignment azimuth angle, and will cause significant performance degradation of ADAS. To effectively solve this…


  • Mahindra & Mahindra Ltd - Mohanraj BALAKRISHNAN
  • Mahindra & Mahindra, Ltd. - Rambabu Radakrishnan
  • Technical Paper
  • 2018-28-0073
Published 2018-07-09 by SAE International in United States
The driver controls are critical interfaces that connects the driver with vehicle. Ergonomically positioned controls considering the target occupant population and usage pattern will increase the driving comfort, overall driving pleasure and experience of the occupant. As per SAE J1138 [1], Gear shifter is a high priority control which need to be quickly accessed or are frequently used by the driver when the vehicle is in motion. Gear shifter is always operated while vehicle is in motion and driver has to keep the eyes and head in the normal driving position. The vehicle packaging constraints like transmission position was limiting the scope of lever position in past since most of the vehicles were having direct shift. The advent of cable transmission shifting and automatic transmissions provided the flexibility of positioning the gear shift lever inside the vehicle. This paper deals with a methodology to position the gear shifter inside the vehicle to ensure proper occupant comfort. Occupant packaging methodologies using the digital human manikins such as RAMSIS provide us the opportunity to position the target…

A Hardware Model for Vehicular Network to Control Air Pollution Leading to Big Data Analytics

  • VIT Universtity - GnanaPrakasam Anuradha, Kalivaradhan Ramesh Babu
  • VIT University Vellore - C D Naiju
  • Technical Paper
  • 2018-28-0038
Published 2018-07-09 by SAE International in United States
The foremost emphasis of this paper is to provide a model to collect the data of vehicular air pollution gases from the individual vehicle. The collection of pollutant data makes the vehicle user, aware of the vehicle maintenance by themselves, indicate them when to stop the vehicle from the fleet and will intimate them the limits of predefined standard indicated by the government. The collected data if implemented to the entire vehicles in existence becomes the big data concept. Individual vehicular emission on the road side analysis after the vehicle enters the fleet is a questionable session at the context of the Indian scenario. As far recent geographical analysis given by world health organization, India is the fourth largest polluted country in the world with more than fifteen states in the danger of respiratory disease and that may lead to death. The prototype that has been designed was smaller in size than the off road analysis done in most of the laboratory. Big data analysis proves the early prediction of futuristic data which turns out…

Effect of Gear shift indicator technique enhancing improved fuel economy on SUV.

  • Mahindra Research Valley - Anbarasu Muthusamy, Vagesh Shangar Ramani, Sachin Bahl, Hariharan Ramanathan, Kuldeepak Chaudhari
  • Technical Paper
  • 2018-28-0054
Published 2018-07-09 by SAE International in United States
Improving the fuel economy of the vehicle resulting in energy conservation on long run is a challenging task in the automotive field without compromising the emission margins. Fuel economy improvement by effective driving is the main focus of this paper by the proper utilization of gears which can enable good fuel economy even when the vehicle is driven by different drivers. GSI technique was implemented on Sports utility vehicle operating with 2.2l engine. Tests were carried with GSI and the effect of fuel consumption and emissions were compared to the regular driving cycle. Optimization of various gear shifting points were analyzed and implemented for better fuel economy keeping the drivability in mind, meeting the BS4 emission norms comfortably. The experiments were carried out in both cold and hot conditions to check the effect of GSI and positive results of fuel economy improvement was yielded. About 8% improvement in fuel consumption was yielded in cold emission and 9% improvement was observed in hot emission with the implementation of Gear Shift Indication in comparison with the regular…

Finite Element Simulation and Validation of Planetary Gear System

  • VE Commercial Vehicles Ltd - Sonu Paroche, Himanshu Deshmukh, Suresh Kumar Kandreegula, Alok Muley
  • Technical Paper
  • 2018-28-0027
Published 2018-07-09 by SAE International in United States
The planetary gear system is a critical component in speed reduction of gear system. It consists of a ring gear, set of planetary gears, a sun gear and a carrier. It is mainly used in high speed reduction transmission. More speed variation can be achieved using this system with same number of gears. This speed reduction is based on the number of teeth in each gear. The size of new system is compact. A theoretical calculation is performed at concept level to get the desired reduction of speed. Then the planetary gear system is simulated using ANSYS software for new development transmission system. The final validation is done with the testing of physical parts. This concept is implemented in 9speed transmission system. Similar concept is in development for the hub reduction with 5 planetary gears. The maximum 3.67 reduction is achieved with planetary system. The stresses in each pin is calculated using FEM.

Comparative studies of different VGT designs on performance and smoke of CRDe engine

  • Mahindra Research Valley - Vagesh Shangar Ramani, Anbarasu Muthusamy
  • Mahindra Research Valley - Sachin Bahl, Hariharan Ramanathan
  • Show More
  • Technical Paper
  • 2018-28-0074
Published 2018-07-09 by SAE International in United States
Diesel engines have occupied a significant position in passenger car applications nowadays. Turbochargers find a very prominent role in diesel engines of all applications in order to achieve desired power and better fuel economy. Gaining higher torque at lower engine speeds with low smoke levels is a very tough task with fixed geometry turbochargers. Variable geometry turbochargers are capable of providing better torque at lower speeds and reduced smoke emissions on CRDe engines. The VGT types used in this study are straight profile nozzle vanes (sample A) and curved profile nozzle vanes (sample B). The curved profile vanes as seen in sample B results in reduced variation of circumferential pressure distortions. Curved blade profile vane sample results in better low speed torque along with reduced fuel consumption and smoke emissions when compared to straight vane profile sample. Finally 5.5% of improved torque at lower speed was obtained with the equivalence ratio maintaining constant and optimizing the combustion variables ensuring safer smoke limits.

Design of Energy Efficient Variable Displacement Oil Pump for Automobile Applications

  • VIT Universtity - Govardhan Reddy I, K Annamalai
  • VIT University Vellore - C D Naiju
  • Technical Paper
  • 2018-28-0080
Published 2018-07-09 by SAE International in United States
The present world persists with a twin crisis of energy consumption and the environmental degradation. Finding a compromise between them provides a breakthrough in the research in energy containments of the engine attachments. Oil pump has role of providing the transmission of oil to other engine parts and acts as the coolant for the moving parts. Conventional oil pump with pressure relief valve is its loss lot of energy in oil re-circulation due to the discharge effect. On contrary, the variable displacement oil pump has its effect in reduction of oil pressure using eccentric ring without having any compromise with the energy consumption. This paper proposes model and experimental methodology of a variable displacement Gerotor oil pump for lubricating the internal combustion engine. This particular unit is performed extremely in terms of rotational speed, delivery pressure and displacement variation. The results from the experimental campaign have been compared with simulations using ANSYS CFX Immerest solid method.