- Email: [email protected]
A method for estimating fuel consumption of traffic flow — using traffic simulations
310
Abstracts
Practical Simulation Method by Compensating the Outlet Flow Angle of a Stator Hiroya Abe, Nobuo Miyoi, Tohru Yamashita,
9534225
Kohichi Shirakigawa (Honda R & D Co., Ltd. Tochigi R & D Center) It is essential to make an estimation of the performance of torque converter within a limited period in the process of designing an automatic transmission. This paper reports the newly developed simulation method, worked out after considering the difference in torque capacity between the calculation with the theory of angular momentum and the measurement taken in testing. It uses the compensation of the outlet flow angle of a stator as the parameter, and has proved a simplified and practical simulation method which helps work on its design and development.
9534270
Design Support System for Developing Automatic Trans-
missions
Toshiya Yamashita, Mikio Mori, Tatsuya Ozeki, Tadashi Kondo, Yasuhiro Hayashi (Toyota Motor Corporation) A design support system has been developed in order to improve work efficiency in developing automatic transmissions. This system consists of various calculating functions represented by the shift quality simulation, and a data base which can automatically get the latest information on parts of automatic transmissions, engine characteristics, and so on. This paper describes an outline and some calculating functions of the system.
9534289 A Method for Estimating Fuel Consumption of Traffic Flow - Using Traffic Simulations - Yasuhisa Kishi, Shinichi Katsuki, 9534234 Advanced Shift Control Technology on Newly-developed Automatictransaxle Kenjiro Fujita, Toyoji Onishi (Mitsubishi Motors Corporation) Mitsubishi has newly developed four and five speed automatictransaxles with advanced shift control technology including the following major features. One is “Clutch to Clutch shifting” strategy which eliminates the overrunning-clutches from the geartrain, and realizes substantial weight reduction and down-sizing of the automatictransaxles. The other is, “Adaptive control” and “Learning control” are introduced into shift scheduling so that it provides suitable gear selections for individual drivers under all driving conditions. In addition, an unique manual-shift mechanizm, named “Sporty mode”, is incorporated in these automatictransaxles in order to give “Fun to Drive” to the drivers.
9534243 Development of an Electronically Controlled Semi-Automatic Multi-Speed Transmission for Heavy-duty Tractors Nobuo Hata, Yoshitaka Nishiyama, Sadahiro Takahashi, Yoshito Watanabe (Nissan Diesel Motor Co., Ltd.) A semi-automatic gear-changing system for l&speed transmission was developed for heavy-duty tractors. Because it was very difficult to cope with all eventual driving situations even with a full electronic control, we remained intentionally some manual driver’s operation, such as operating the clutch pedal at starting the vehicle and tipping the shift lever for shifting the gear up or down. Several ideas were incorporated in both the hardware and software to improve the trade off between shift shock and shifting time and to enhance fail-safe and back-up functions.
Yasuo Yoshikawa, Ikuhiro Morita (Nissan Motor Co., Ltd.) A method has been developed for using traffic simulations to estimate the potential reduction in fuel consumption that might be obtained by improving traffic flows. This method uses a newly developed program for calculating fuel consumption. This is accomplished by calculating the speed and acceleration of every vehicle per second, and matching the results with a table showing the fuel consumption for every vehicle model based on chassis dynamometer tests. The method makes it possible to show quantitatively the effect of improving traffic flows on reducing fuel consumption. It is expected to be useful in stepping up improvement of the road environment and traffic flows.
Analysis of Fuel Consumption Structure Based on Vehicle Operating Patterns Takashi Oguchi, Masaaki Taniguchi, Tomoyuki
9534298
Yamaguchi, Masaki Koga, Satoshi Okamoto (Nissan Motor Co., Ltd.) Vehicle fuel consumption varies considerably depending on the actual traffic flow and road environment. The objective of this study is to identify the relationship between vehicle operating patterns and the fuel consumption structure. Data are collected on expressways and surface streets using a vehicle equipped with measuring instruments. An analysis is made of the relationship between the road environment, traffic flow characteristics and the ratio of stopping time to travel time. The relationship between the vehicle operating patterns and actual fuel consumption is made clear. Based on the results, an attempt is made to systematize the fuel consumption structure in real traffic situations.
A Horsepower Chargeable Sub Power Battery System Part 1: Consideration of Braking New Vision - Shigeru Yanagisawa
9534306
A Variable Speed Driving Unit Equipped wip an Adjustable Worm Pitch - Partl: New Velt Less Type Consideration Contain Reverse Gear - Shigel Yanagisawa (Oomiya Itoman), 9534252
Nobuaki Yanagisawa, Masaki Suzuki (Toyo university) We propose a new variable speed driving unit equipped with an adjustable gear and a spike gear. It is possible to change the gear pitch continuously from minus to plus and vice versa. If this unit is applied to car technology, it is possible to shift the gear from top to reverse through neutral by sliding the spike gear. But velt type variable speed drive don’t have this feature. Usually, worm gear have had the energy loss of due to friction. But our system overcame the problem by spike gear’s ballbearing. Thus this unit makes variable speed drive more ecological than velt type, and only take small space.
An Application of Taguti Methods for the Development of EMCD Pilot Clutch Akira Iwasaki, Kunio Tanaami, Syunichi Tochigi (Tochigi Fuji Sangyo K.K.) EMCD (Electra-magnetic Control Devices) can control the torque actively to limit the rotational speed difference of motor vehicle’s axles in proportion to the electric current fed to the magnet coil. The specifications of pilot clutch friction disk and plate are very significant for this function. This paper describes the result of Taguchi Methods application to develop the optimum specification of them.
9534261
(Oomiya Itoman), Nobuaki Yanagisawa, Masaki Suzuki (Toy0 university) We propose a new system which can recover kinetic energy by means of an adjustable radius flywheel. This wheel works during braking and subsequent acceleration. While curving the flywheel can turn car’s translation energy of more than 3OOOOo[w] into rotational energy by controlling the weight’s radius instead of energy loss of braking. And after curving, those 3OOooo[w] is restored in own power train with acceleration. This charged energy 3OOooo[w] exchange into unit of [PSI, this system helps engine more than 80 PS while 5 seconds. Thus this system might be called as second power unit.
9534315 The Danger of Fatal CO Poisoning of Car Occupants Caused by Exhaust Gas Kenji Koide, Yoshiyasu Satta, Akira Matsushita, Hirotaka Ono, Hitoshi Tsuchihashi (Forensic Science Laboratory Osaka Prefectural Police Headquarters) There have been cases that the occupant of the car died of CO poisoning while parking outdoor. We made detailed experiments related to these cases. We verified the process of these cases and, made it clear that the cases of this kind can occur regardless of the type of car, not only while parking but while cruising. This paper describes the experiments we made and the results drawn from the experiments.
Abstracts
Practical Simulation Method by Compensating the Outlet Flow Angle of a Stator Hiroya Abe, Nobuo Miyoi, Tohru Yamashita,
9534225
Kohichi Shirakigawa (Honda R & D Co., Ltd. Tochigi R & D Center) It is essential to make an estimation of the performance of torque converter within a limited period in the process of designing an automatic transmission. This paper reports the newly developed simulation method, worked out after considering the difference in torque capacity between the calculation with the theory of angular momentum and the measurement taken in testing. It uses the compensation of the outlet flow angle of a stator as the parameter, and has proved a simplified and practical simulation method which helps work on its design and development.
9534270
Design Support System for Developing Automatic Trans-
missions
Toshiya Yamashita, Mikio Mori, Tatsuya Ozeki, Tadashi Kondo, Yasuhiro Hayashi (Toyota Motor Corporation) A design support system has been developed in order to improve work efficiency in developing automatic transmissions. This system consists of various calculating functions represented by the shift quality simulation, and a data base which can automatically get the latest information on parts of automatic transmissions, engine characteristics, and so on. This paper describes an outline and some calculating functions of the system.
9534289 A Method for Estimating Fuel Consumption of Traffic Flow - Using Traffic Simulations - Yasuhisa Kishi, Shinichi Katsuki, 9534234 Advanced Shift Control Technology on Newly-developed Automatictransaxle Kenjiro Fujita, Toyoji Onishi (Mitsubishi Motors Corporation) Mitsubishi has newly developed four and five speed automatictransaxles with advanced shift control technology including the following major features. One is “Clutch to Clutch shifting” strategy which eliminates the overrunning-clutches from the geartrain, and realizes substantial weight reduction and down-sizing of the automatictransaxles. The other is, “Adaptive control” and “Learning control” are introduced into shift scheduling so that it provides suitable gear selections for individual drivers under all driving conditions. In addition, an unique manual-shift mechanizm, named “Sporty mode”, is incorporated in these automatictransaxles in order to give “Fun to Drive” to the drivers.
9534243 Development of an Electronically Controlled Semi-Automatic Multi-Speed Transmission for Heavy-duty Tractors Nobuo Hata, Yoshitaka Nishiyama, Sadahiro Takahashi, Yoshito Watanabe (Nissan Diesel Motor Co., Ltd.) A semi-automatic gear-changing system for l&speed transmission was developed for heavy-duty tractors. Because it was very difficult to cope with all eventual driving situations even with a full electronic control, we remained intentionally some manual driver’s operation, such as operating the clutch pedal at starting the vehicle and tipping the shift lever for shifting the gear up or down. Several ideas were incorporated in both the hardware and software to improve the trade off between shift shock and shifting time and to enhance fail-safe and back-up functions.
Yasuo Yoshikawa, Ikuhiro Morita (Nissan Motor Co., Ltd.) A method has been developed for using traffic simulations to estimate the potential reduction in fuel consumption that might be obtained by improving traffic flows. This method uses a newly developed program for calculating fuel consumption. This is accomplished by calculating the speed and acceleration of every vehicle per second, and matching the results with a table showing the fuel consumption for every vehicle model based on chassis dynamometer tests. The method makes it possible to show quantitatively the effect of improving traffic flows on reducing fuel consumption. It is expected to be useful in stepping up improvement of the road environment and traffic flows.
Analysis of Fuel Consumption Structure Based on Vehicle Operating Patterns Takashi Oguchi, Masaaki Taniguchi, Tomoyuki
9534298
Yamaguchi, Masaki Koga, Satoshi Okamoto (Nissan Motor Co., Ltd.) Vehicle fuel consumption varies considerably depending on the actual traffic flow and road environment. The objective of this study is to identify the relationship between vehicle operating patterns and the fuel consumption structure. Data are collected on expressways and surface streets using a vehicle equipped with measuring instruments. An analysis is made of the relationship between the road environment, traffic flow characteristics and the ratio of stopping time to travel time. The relationship between the vehicle operating patterns and actual fuel consumption is made clear. Based on the results, an attempt is made to systematize the fuel consumption structure in real traffic situations.
A Horsepower Chargeable Sub Power Battery System Part 1: Consideration of Braking New Vision - Shigeru Yanagisawa
9534306
A Variable Speed Driving Unit Equipped wip an Adjustable Worm Pitch - Partl: New Velt Less Type Consideration Contain Reverse Gear - Shigel Yanagisawa (Oomiya Itoman), 9534252
Nobuaki Yanagisawa, Masaki Suzuki (Toyo university) We propose a new variable speed driving unit equipped with an adjustable gear and a spike gear. It is possible to change the gear pitch continuously from minus to plus and vice versa. If this unit is applied to car technology, it is possible to shift the gear from top to reverse through neutral by sliding the spike gear. But velt type variable speed drive don’t have this feature. Usually, worm gear have had the energy loss of due to friction. But our system overcame the problem by spike gear’s ballbearing. Thus this unit makes variable speed drive more ecological than velt type, and only take small space.
An Application of Taguti Methods for the Development of EMCD Pilot Clutch Akira Iwasaki, Kunio Tanaami, Syunichi Tochigi (Tochigi Fuji Sangyo K.K.) EMCD (Electra-magnetic Control Devices) can control the torque actively to limit the rotational speed difference of motor vehicle’s axles in proportion to the electric current fed to the magnet coil. The specifications of pilot clutch friction disk and plate are very significant for this function. This paper describes the result of Taguchi Methods application to develop the optimum specification of them.
9534261
(Oomiya Itoman), Nobuaki Yanagisawa, Masaki Suzuki (Toy0 university) We propose a new system which can recover kinetic energy by means of an adjustable radius flywheel. This wheel works during braking and subsequent acceleration. While curving the flywheel can turn car’s translation energy of more than 3OOOOo[w] into rotational energy by controlling the weight’s radius instead of energy loss of braking. And after curving, those 3OOooo[w] is restored in own power train with acceleration. This charged energy 3OOooo[w] exchange into unit of [PSI, this system helps engine more than 80 PS while 5 seconds. Thus this system might be called as second power unit.
9534315 The Danger of Fatal CO Poisoning of Car Occupants Caused by Exhaust Gas Kenji Koide, Yoshiyasu Satta, Akira Matsushita, Hirotaka Ono, Hitoshi Tsuchihashi (Forensic Science Laboratory Osaka Prefectural Police Headquarters) There have been cases that the occupant of the car died of CO poisoning while parking outdoor. We made detailed experiments related to these cases. We verified the process of these cases and, made it clear that the cases of this kind can occur regardless of the type of car, not only while parking but while cruising. This paper describes the experiments we made and the results drawn from the experiments.