- Email: [email protected]
9436404 Numerical simuration of insolation in an automotive cabin environment
Abstracts 1994 JSAk_ Autumn ('onl ention /.ISAI: Review 16 (1995) 9 5 - 1 1 3
This paper is concerned with a semi-active suspension system of light cars using fuzzy reasoning. This system controls the damping forces of four shock absorbers independently to achieve the better ride comfort. The damping force is determined by fuzzy reasoning where the strain of the spring seat and its derivative are treated as input variables, and the damping force is calculated as the output of consequences. The time lag to change the damping force is considered in the experimental system and the computer simulation. Using computer simulation and testing the experimental vehicle, the effectiveness tff this system is verified.
9436387 Vibraton Isolation Performance of Vehicles with Connected Front and Rear Suspension Dampers: Part 1: Basic equation and damper control Tomohiro Hasegawa (Tokyo University of Agr. and Tech. Graduate), Masao Nagai (Tokyo Univcrsity ot Agr and Tcch.), Hiroshi Arakawa (JR Hokkaido), pp. 153 156, 6 figs., 3 refs. Although dampers and springs have bccn uscd for vehicle suspensions for a long time, the dampers arc mostly installed independently. This paper deals with a vehicle model where the front and rear dampers arc connected by capillary tubes. Equations of the mass flow through the capillary tubes are linealized on the assumption of small variations in volume and pressure of the dampcr chambers. Expressions for the vibration transmissibility in ride quality and road holding are derivcd. Thc effect of the capillary flow and the semi-active damper control arc studied. 9436396 The Danger of Fatal CO Poisoning of Car Occupants Caused by the Corrosion of Exhaust Parts Kcnji Koide. Akira Matsushita, Hirotaka Ono, Hitoshi Tsuchihashi (Forensic Science Laboratory Osaka Prefectural Police Headquarters). Hitoshi Maeda (Osaka City University), Kazunori Fukita (Osaka City University, Osaka Medical Examiner's Office), pp. 157-1611, 7 figs.. 2 refs There has been cases that the occupant of the car died of C() poisoning while parking outdoor. The cases of this kind had not bccn known to a wide public. We made detailed examinations on two cases happened in Osaka, and we made it clear that the cause of the cascs are in problems of exhaust system which is common to most kind of car. and that another cases may happen in the future~ This paper describes thc examinations we made and the results drawn from the examinations to alert the danger. 9436404 Numerical Simuration of Insolation in an Automotive Cabin Environment Atsushi Shinma. Hideo Asano (NIPPONDENSO Co., LTD.), pp. 161-164, 10 figs., 1 table, 4 refs. Comfort in an automotive cabin is affected by solar radiation much more than that in a residential room. To obtain the effects of solar radiation quantitatively under various condition is essential in crcating comfortable cabin environment. This paper introduces a quantitative method, which simulates passenger heat amount given by sun light at various solar positions and intensitics with a vehicle facing the sun in various directions. 9436413 Evaluating of Thermal Comfort in the Vehicles with Numerical Manikin: Description of Mathematical Model and Examples of Calculation Kazuhiko Matsunaga (ISUZU Motors Ltd.), Shin-ichi Tanabe (Ochanomizu University), pp. 165-168, 5 figs., 4 tables, 12 refs. Mathematical model for evaluation of thermal comfort in the vehicles is described. This mathematical model is based on Stolwijk model. Whole body is divided for 16 parts and each part has four nodes of core, muscle, fat, and skin. All parts are connected to the central blood flow. Heat balance equations are derived. Terms in heat balance equations are detailed mentioned. Heat capacity, heat production, evaporative heat loss. sensible heat loss and conductive heat exchange are explained. Examples of calculation in the vehicles are also shown in the report. 9436422 Visualization System of l'hermal Sensation Kazushige Ogawa (NIPPONDENSO Co.. Ltd.). Takafumi Masuda, Akio Yamaguchi (NIPPONDENSO Co., Ltd.), pp. 169-172, 8 figs., 1 table, 5 rcfs.
99
As a means of establishing performance of high function automotive air-conditioners our aim has been to develop equipment to measure sensed temperature around the vehicle passenger. Our first step has been to use mannequins and computer graphics to measure important enviromental factors such air temperature and velocity. This report explains the real time display method developed for this data.
9436440 Analysis of Vehicle Fuel Consumption Structure between Congested and Non-congested Traffic Conditions Takashi Oguchi, Masaaki Taniguchi, Kohji Sato (Nissan Motor Co., Ltd.), Hirohisa Morita (Metropolitan Expressway Public Corp.), pp. 173-176, 5 figs., 3 tables, 2 rcfs. Vehicle fuel economy in real traffic situation is influenced by road and traffic conditions. The objective of this study is to identify the factors affecting fuel economy in real traffic situations. Experimental data were collected with a car equipped with measuring instruments and traffic data wcrc also collected simultaneously by traffic detectors. An analysis of the data revealed differences in the fuel consumption structure between congested and non-congested traffic conditions. In congested traffic, fuel consumption is proportional to travel time. Under non-congested conditions, fuel consumption shows little relation to driving speed or travel time. Rather, it can be expressed as a two-variable (the average and standard deviation of acceleration) linear model. 9436459 The Influence of the Traffic Environment on Vehicle Fuel Consumption Satoshi Okamoto, Masaaki Taniguchi (Nissan Motor Co., Ltd.), pp. 177-180, 9 figs., 2 tables, 3 refs. Roads in the Tokyo metropolitan area were classified into similar traffic environments and driving tests were conducted to compare vehicle fuel consumption in each environment. At the same mean traveling speed, it was found that more fuel was consumed on 6-lane roads that on 2-lane roads. That difference is attributed to changes in driving patterns due to the traffic environment. Specifically, there was a higher ratio of stopping time and an increase in maximum speed on the former roads, which contributed to increased fuel consumption. This paper discusses the relationship between the traffic environment and driving patterns and resulting effect on vehicle fuel consumption. 9436468 A study of relationship between road profile and velocity fluctuation at expressway Hiroshi Hirai, Kenzo Hosoi (Japan Automobile Research Institute), pp. 181-184, 11 figs., 2 tables, 2 refs. The vehicle's velocity is influenced by road grade, and this fluctuation induces unstable traffic state. This is one of the reason which make traffic jam, especially at expressway. Running test was carried out to investigate characteristics between grade and vehicle's velocity that is concerned with traffic behavior. As the result of calculating transfer functions for velocity error/grade from running test data, these transfer functions show that gains for velocity error/grade are flat and phases are delayed with frequency. Furthermore the tranfer functions show that driver controls vehicle's velocity with not only velocity error but to detect the road grade. 9436477 Development of Shift Control Method reflecting the Road Condition Kazumi hoshiya, Yasunori Nakawaki, Yoshiharu Harada, Youji Takanami (Toyoto Motor Corporation), pp. 185-188, 11 figs., 1 table, 1 ref. We have developed an automatic transmission shift control method that is capable of suitable gear position detecting road grade. As the road condition estimation method. "Fuzzy mathematical quantification theory" is well known. Our method realizes the more precise grade estimation comparing the base acceleration calculated with throttle position signal et al. and the real acceleration. This paper describes this shift control method and its effect. 9436486 Optionally Tuning Up of the Sensitibity of an Accelerator Pedal by DBW Concept Shigeyuki Morita (Osaka City University),
This paper is concerned with a semi-active suspension system of light cars using fuzzy reasoning. This system controls the damping forces of four shock absorbers independently to achieve the better ride comfort. The damping force is determined by fuzzy reasoning where the strain of the spring seat and its derivative are treated as input variables, and the damping force is calculated as the output of consequences. The time lag to change the damping force is considered in the experimental system and the computer simulation. Using computer simulation and testing the experimental vehicle, the effectiveness tff this system is verified.
9436387 Vibraton Isolation Performance of Vehicles with Connected Front and Rear Suspension Dampers: Part 1: Basic equation and damper control Tomohiro Hasegawa (Tokyo University of Agr. and Tech. Graduate), Masao Nagai (Tokyo Univcrsity ot Agr and Tcch.), Hiroshi Arakawa (JR Hokkaido), pp. 153 156, 6 figs., 3 refs. Although dampers and springs have bccn uscd for vehicle suspensions for a long time, the dampers arc mostly installed independently. This paper deals with a vehicle model where the front and rear dampers arc connected by capillary tubes. Equations of the mass flow through the capillary tubes are linealized on the assumption of small variations in volume and pressure of the dampcr chambers. Expressions for the vibration transmissibility in ride quality and road holding are derivcd. Thc effect of the capillary flow and the semi-active damper control arc studied. 9436396 The Danger of Fatal CO Poisoning of Car Occupants Caused by the Corrosion of Exhaust Parts Kcnji Koide. Akira Matsushita, Hirotaka Ono, Hitoshi Tsuchihashi (Forensic Science Laboratory Osaka Prefectural Police Headquarters). Hitoshi Maeda (Osaka City University), Kazunori Fukita (Osaka City University, Osaka Medical Examiner's Office), pp. 157-1611, 7 figs.. 2 refs There has been cases that the occupant of the car died of C() poisoning while parking outdoor. The cases of this kind had not bccn known to a wide public. We made detailed examinations on two cases happened in Osaka, and we made it clear that the cause of the cascs are in problems of exhaust system which is common to most kind of car. and that another cases may happen in the future~ This paper describes thc examinations we made and the results drawn from the examinations to alert the danger. 9436404 Numerical Simuration of Insolation in an Automotive Cabin Environment Atsushi Shinma. Hideo Asano (NIPPONDENSO Co., LTD.), pp. 161-164, 10 figs., 1 table, 4 refs. Comfort in an automotive cabin is affected by solar radiation much more than that in a residential room. To obtain the effects of solar radiation quantitatively under various condition is essential in crcating comfortable cabin environment. This paper introduces a quantitative method, which simulates passenger heat amount given by sun light at various solar positions and intensitics with a vehicle facing the sun in various directions. 9436413 Evaluating of Thermal Comfort in the Vehicles with Numerical Manikin: Description of Mathematical Model and Examples of Calculation Kazuhiko Matsunaga (ISUZU Motors Ltd.), Shin-ichi Tanabe (Ochanomizu University), pp. 165-168, 5 figs., 4 tables, 12 refs. Mathematical model for evaluation of thermal comfort in the vehicles is described. This mathematical model is based on Stolwijk model. Whole body is divided for 16 parts and each part has four nodes of core, muscle, fat, and skin. All parts are connected to the central blood flow. Heat balance equations are derived. Terms in heat balance equations are detailed mentioned. Heat capacity, heat production, evaporative heat loss. sensible heat loss and conductive heat exchange are explained. Examples of calculation in the vehicles are also shown in the report. 9436422 Visualization System of l'hermal Sensation Kazushige Ogawa (NIPPONDENSO Co.. Ltd.). Takafumi Masuda, Akio Yamaguchi (NIPPONDENSO Co., Ltd.), pp. 169-172, 8 figs., 1 table, 5 rcfs.
99
As a means of establishing performance of high function automotive air-conditioners our aim has been to develop equipment to measure sensed temperature around the vehicle passenger. Our first step has been to use mannequins and computer graphics to measure important enviromental factors such air temperature and velocity. This report explains the real time display method developed for this data.
9436440 Analysis of Vehicle Fuel Consumption Structure between Congested and Non-congested Traffic Conditions Takashi Oguchi, Masaaki Taniguchi, Kohji Sato (Nissan Motor Co., Ltd.), Hirohisa Morita (Metropolitan Expressway Public Corp.), pp. 173-176, 5 figs., 3 tables, 2 rcfs. Vehicle fuel economy in real traffic situation is influenced by road and traffic conditions. The objective of this study is to identify the factors affecting fuel economy in real traffic situations. Experimental data were collected with a car equipped with measuring instruments and traffic data wcrc also collected simultaneously by traffic detectors. An analysis of the data revealed differences in the fuel consumption structure between congested and non-congested traffic conditions. In congested traffic, fuel consumption is proportional to travel time. Under non-congested conditions, fuel consumption shows little relation to driving speed or travel time. Rather, it can be expressed as a two-variable (the average and standard deviation of acceleration) linear model. 9436459 The Influence of the Traffic Environment on Vehicle Fuel Consumption Satoshi Okamoto, Masaaki Taniguchi (Nissan Motor Co., Ltd.), pp. 177-180, 9 figs., 2 tables, 3 refs. Roads in the Tokyo metropolitan area were classified into similar traffic environments and driving tests were conducted to compare vehicle fuel consumption in each environment. At the same mean traveling speed, it was found that more fuel was consumed on 6-lane roads that on 2-lane roads. That difference is attributed to changes in driving patterns due to the traffic environment. Specifically, there was a higher ratio of stopping time and an increase in maximum speed on the former roads, which contributed to increased fuel consumption. This paper discusses the relationship between the traffic environment and driving patterns and resulting effect on vehicle fuel consumption. 9436468 A study of relationship between road profile and velocity fluctuation at expressway Hiroshi Hirai, Kenzo Hosoi (Japan Automobile Research Institute), pp. 181-184, 11 figs., 2 tables, 2 refs. The vehicle's velocity is influenced by road grade, and this fluctuation induces unstable traffic state. This is one of the reason which make traffic jam, especially at expressway. Running test was carried out to investigate characteristics between grade and vehicle's velocity that is concerned with traffic behavior. As the result of calculating transfer functions for velocity error/grade from running test data, these transfer functions show that gains for velocity error/grade are flat and phases are delayed with frequency. Furthermore the tranfer functions show that driver controls vehicle's velocity with not only velocity error but to detect the road grade. 9436477 Development of Shift Control Method reflecting the Road Condition Kazumi hoshiya, Yasunori Nakawaki, Yoshiharu Harada, Youji Takanami (Toyoto Motor Corporation), pp. 185-188, 11 figs., 1 table, 1 ref. We have developed an automatic transmission shift control method that is capable of suitable gear position detecting road grade. As the road condition estimation method. "Fuzzy mathematical quantification theory" is well known. Our method realizes the more precise grade estimation comparing the base acceleration calculated with throttle position signal et al. and the real acceleration. This paper describes this shift control method and its effect. 9436486 Optionally Tuning Up of the Sensitibity of an Accelerator Pedal by DBW Concept Shigeyuki Morita (Osaka City University),