- Email: [email protected]
International Salon
Abstracts / JSAE Review I7 (1996) 9540408 Effect of Fuel Type on Engine HC Emissions Koji Oyama, Kazumasa Hamatani, Tatsuo Omata (Nippon Oil Company, Ltd.) The effect of fuel type on engine HC emissions was investigated using a 2L, 4 cylinder engine using two single-component fuels and varied excess-air-ratio at several steady conditions, and analyzing both the total HC emissions and the speciated HCs. Simulations of detailed oxidation chemistry were used to interpret the tendency of HC emissions. The large effect of excess-air-ratio and small effect of fuel type on THC was assumed to result from mixing unburned fuel with the bulk of burned gases in which fractions of oxygen and OH radical are significantly influenced by excess-air-ratio. 9540417 Influence of Oxidized Gasoline in Vehicle Fuel Tank Minoru Nakamura (Honda Motor Co., Ltd.), Yuji Yamamoto (Honda R&D Co., Ltd.) From a market survey of customers vehicles in the United States of America, white lead was detected in some fuel tanks. It is supposed that white lead is composed from oxidized gasoline and Pb-Sn alloy which is used on teme sheet as surface plating. There is concern about severe emission control in the future, because emission device poisoning is a very serious problem. Therefore, the influences of white lead on emission control devices through the fuel systems are being investigated.
Effects of Diesel Fuel Properties on Exhaust Emissions from IDI Diesel Engine Yasunori Takei, Yoshio Fujimoto, Junichi
9540426
Matsudaira (Toyota Motor Corporation), Kazushi Tsurutani (Tonen Corporation), Mitsuhiro Kumamoto (Esso SEKIYU K.K.1 The effects of diesel fuel properties (aromatics, cetane index and T90), low T90 diesel fuel and narrow cut type diesel fuels on diesel emissions were studied. Emissions were measured using ID1 vehicle (L4,2.OL, NA, w/EGR, w/o Catlyst) under the Japanese IO-15 test cycle and the ECEl5 +EUDC test cycle. Lowering T90 was effective to reduce PM with both test cycles. As T90 was lowered from 330 to 260 deg.C, PM was reduced by about 20%. Cetan index (Ci/JIS) had few effects on PM as Ci was larger than 54. When low Ci (45) diesel fuel was used, PM was increased by about 20%. Aromatics showed relatively high correlation with NOx.
83-99
99
with oxygenated fuels was more significant under the ECE+EUDC test cycle than the Japanese lo- 15 test cycle. Di- and T&aromatics affected PM emissions more than Paraffin or Mono-aromatics.
9540444 Combustion Process of CNG Engine with MPI System Hiromi Matsuura, Kenichirou Ishibashi, Isao Fujii, Ikuo Kajitani (Honda R&D Co., Ltd.) A study was made on engine performance when the MPI system is applied for improving emissions and engine performance on a CNG fueled Sl engine. This report confirmed that the fuel injection timing significantly affects fuel economy, emissions and engine performance. Further study was made on the effects of various compression ratios on the engine performance.
Reduction of Exhaust Emissions and Fuel Consumption on CNG Engine for Light Duty Truck Akira Suzuki, Koji Mori, Tetsuro
9540453
Kato, Hiroshi Nojima (Mitsubishi Motors Corporation) Natural Gas (CNG) is a viable alternative fuel to obtain low exhaust emissions. In order to obtain low emissions and low fuel consumption simultaneously in a CNG engine, the influence of excess air ratio and fuel supply systems on exhaust emissions were investigated. As a result of this investigation, a CNG engine with lean bum under partial load using a solenoid gas valve fuel supply system was found to be suitable for low exhaust emissions and reduction of fuel consumption simultaneously without reducing engine performance.
Study of Mixed State for Natural Gas Automobile Mixer Part One: Mixed Phenomenon in Two Dimension Model of Mixer
9540462
Xu Bo Yan (Chiba University), Mikio Furuyama (Chiba University) The mechanism of a mixture of air-methane gas was developed by using a Schlieren apparatus that visualized density gradient, and by visualizing the fluid of mixed gas near the nozzle and throttle valve. The state of fluid of mixed gas and the influence of fluid path of mixer and angle of throttle valve are discussed. As a result conditions for formation of uniformity mixed gas are proposed.
9540435
9540471 Interference of Nitrogen Dioxide on Measurement of Formaldehyde Using DNPH Method Tadashi Mori, Fumiko Tsuruga
ration) Yasunori Takei, Yoshio Fijimoto, Junichi Matsudaira (Toyota Motor Corporation), Mitsuhiro Kumamoto (Esso SEKIYU K.K.) The effects of oxygenates, high boiling point hydrocarbons and aromatics distribution on diesel exhaust emissions were studied under the Japanese lo-15 test cycle and the ECEl5+EUDC test cycle. Emissions were measured using IDI vehicle (L4, 2.OL, NA, w/EGR, W/O Catlystl. Oxygenates reduced particulate emissions remarkably but had little effect on NOx emissions. Particulate emissions seemed to be more affected by the blended oxygen content of oxygenated fuel than by its molecular structure, cetane number or boiling point. The reduction in particulates
(Japan Automobile Research Institute, Inc.), Sousuke Sasaki (Japan Automobile Manufacturers Association, Inc.) In order to establish a measuring method of formaldehyde (HCHO) in tailpipe exhaust emissions from methanol-fueled heavy-duty vehicles, we examined the interference of nitrogen dioxide (NO,) on measurement of HCHO, and confirmed the relationship between the determination range of HCHO and the concentration of NO, using synthetic gases. The results show that the impinger-GC method is suitable for the evaluation of HCHO under the cold start idling driving condition and the impingerHPLC method is suitable for the evaluation of HCHO under the steadystate driving condition.
Effects of Oxygenates and Poly-Aromatics on Exhaust Emissions from ID1 Diesel Engine Kazushi Tsurutani, (Tonen Corpo-
Effects of Diesel Fuel Properties on Exhaust Emissions from IDI Diesel Engine Yasunori Takei, Yoshio Fujimoto, Junichi
9540426
Matsudaira (Toyota Motor Corporation), Kazushi Tsurutani (Tonen Corporation), Mitsuhiro Kumamoto (Esso SEKIYU K.K.1 The effects of diesel fuel properties (aromatics, cetane index and T90), low T90 diesel fuel and narrow cut type diesel fuels on diesel emissions were studied. Emissions were measured using ID1 vehicle (L4,2.OL, NA, w/EGR, w/o Catlyst) under the Japanese IO-15 test cycle and the ECEl5 +EUDC test cycle. Lowering T90 was effective to reduce PM with both test cycles. As T90 was lowered from 330 to 260 deg.C, PM was reduced by about 20%. Cetan index (Ci/JIS) had few effects on PM as Ci was larger than 54. When low Ci (45) diesel fuel was used, PM was increased by about 20%. Aromatics showed relatively high correlation with NOx.
83-99
99
with oxygenated fuels was more significant under the ECE+EUDC test cycle than the Japanese lo- 15 test cycle. Di- and T&aromatics affected PM emissions more than Paraffin or Mono-aromatics.
9540444 Combustion Process of CNG Engine with MPI System Hiromi Matsuura, Kenichirou Ishibashi, Isao Fujii, Ikuo Kajitani (Honda R&D Co., Ltd.) A study was made on engine performance when the MPI system is applied for improving emissions and engine performance on a CNG fueled Sl engine. This report confirmed that the fuel injection timing significantly affects fuel economy, emissions and engine performance. Further study was made on the effects of various compression ratios on the engine performance.
Reduction of Exhaust Emissions and Fuel Consumption on CNG Engine for Light Duty Truck Akira Suzuki, Koji Mori, Tetsuro
9540453
Kato, Hiroshi Nojima (Mitsubishi Motors Corporation) Natural Gas (CNG) is a viable alternative fuel to obtain low exhaust emissions. In order to obtain low emissions and low fuel consumption simultaneously in a CNG engine, the influence of excess air ratio and fuel supply systems on exhaust emissions were investigated. As a result of this investigation, a CNG engine with lean bum under partial load using a solenoid gas valve fuel supply system was found to be suitable for low exhaust emissions and reduction of fuel consumption simultaneously without reducing engine performance.
Study of Mixed State for Natural Gas Automobile Mixer Part One: Mixed Phenomenon in Two Dimension Model of Mixer
9540462
Xu Bo Yan (Chiba University), Mikio Furuyama (Chiba University) The mechanism of a mixture of air-methane gas was developed by using a Schlieren apparatus that visualized density gradient, and by visualizing the fluid of mixed gas near the nozzle and throttle valve. The state of fluid of mixed gas and the influence of fluid path of mixer and angle of throttle valve are discussed. As a result conditions for formation of uniformity mixed gas are proposed.
9540435
9540471 Interference of Nitrogen Dioxide on Measurement of Formaldehyde Using DNPH Method Tadashi Mori, Fumiko Tsuruga
ration) Yasunori Takei, Yoshio Fijimoto, Junichi Matsudaira (Toyota Motor Corporation), Mitsuhiro Kumamoto (Esso SEKIYU K.K.) The effects of oxygenates, high boiling point hydrocarbons and aromatics distribution on diesel exhaust emissions were studied under the Japanese lo-15 test cycle and the ECEl5+EUDC test cycle. Emissions were measured using IDI vehicle (L4, 2.OL, NA, w/EGR, W/O Catlystl. Oxygenates reduced particulate emissions remarkably but had little effect on NOx emissions. Particulate emissions seemed to be more affected by the blended oxygen content of oxygenated fuel than by its molecular structure, cetane number or boiling point. The reduction in particulates
(Japan Automobile Research Institute, Inc.), Sousuke Sasaki (Japan Automobile Manufacturers Association, Inc.) In order to establish a measuring method of formaldehyde (HCHO) in tailpipe exhaust emissions from methanol-fueled heavy-duty vehicles, we examined the interference of nitrogen dioxide (NO,) on measurement of HCHO, and confirmed the relationship between the determination range of HCHO and the concentration of NO, using synthetic gases. The results show that the impinger-GC method is suitable for the evaluation of HCHO under the cold start idling driving condition and the impingerHPLC method is suitable for the evaluation of HCHO under the steadystate driving condition.
Effects of Oxygenates and Poly-Aromatics on Exhaust Emissions from ID1 Diesel Engine Kazushi Tsurutani, (Tonen Corpo-