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Viewing 1 to 30 of 132
2014-04-01
Technical Paper
2014-01-0522
Chinmoy Pal, Tomosaburo Okabe, Kulothungan Vimalathithan, Jeyabharath Manoharan, Muthukumar Muthanandam, Satheesh Narayanan
Abstract A logistic regression analysis of accident cases in the NASS-PCDS (National Automotive Sampling System-Pedestrian Crash Data Study) database clearly shows that pedestrian pelvis injuries tend to be complex and depend on various factors such as the impact speed, the ratio of the pedestrian height to that of the bonnet leading edge (BLE) of the striking vehicle, and the gender and age of the pedestrian. Adult female models (50th %ile female AF50: 161 cm and 61 kg; 5th %ile female AF05: 154 cm and 50 kg) were developed by morphing the JAMA 50th %ile male AM50 and substituting the pelvis of the GHBMC AM50 model. The fine-meshed pelvis model thus obtained is capable of predicting pelvis fractures. Simulations conducted with these models indicate that the characteristics of pelvis injury patterns in male and female pedestrians are influenced by the hip/BLE height ratio and to some extent by the pelvis bone shape.
2014-04-01
Technical Paper
2014-01-0489
Chinmoy Pal, Tomosaburo Okabe, Kulothungan Vimalathithan, Muthukumar Muthanandam, Jeyabharath Manoharan, Satheesh Narayanan
Abstract A comprehensive analysis was performed to evaluate the effect of BMI on different body region injuries for side impact. The accident data for this study was taken from the National Automotive Sampling System-Crashworthiness Data System (NASS-CDS). It was found that the mean BMI values for driver and front passengers increases over the years in the US. To study the effect of BMI, the range was divided into three groups: Thin (BMI<21), Normal (BMI 24-27) and Obese (BMI>30). Other important variables considered for this study were model year (MY1995-99 for old vehicles & MY2000-08 for newer vehicles), impact location (side-front F, side-center P & side-distributed Y) and direction of force (8-10 o'clock for nearside & 2-4 o'clock for far-side). Accident cases involving older occupants above 60 years was omitted in order to minimize the bone strength depreciation effect. Results of the present study indicated that the Model Year has influence on lower extremity injuries.
2013-04-08
Journal Article
2013-01-0599
Kazuya Iwata, Kaoru Tatsu, Hidetsugu Saeki, Tomosaburo Okabe
A new highly biofidelic side impact dummy, the WorldSID 50th percentile male, has been developed under the supervision of the International Organization for Standardization in order to harmonize a number of existing side impact dummies in one single dummy. Momentum is growing for using the WorldSID in safety tests in the EU and the US. In the present study, two Euro-NCAP pole side impact tests were conducted to compare ES-2 and WorldSID responses in a mid-size SUV with respective seating positions as stipulated in the Euro-NCAP test conditions and fitted with the same side airbag. It was found that, compared with ES-2, the chest, abdomen and pelvis accelerations of WorldSID are more sensitive to variation in the applied external load transmitted by the deployed side airbag and door intrusion.
2011-09-11
Technical Paper
2011-24-0090
Giuseppe Correale, Aleksandr Rakitin, Andrey Nikipelov, Sergey Pancheshnyi, Ilya Popov, Andrey Starikovskiy, Taisuke Shiraishi, Tomonori Urushihara, Michael Boot
High-voltage nanosecond gas discharge has been shown to be an efficient way to ignite ultra-lean fuel air mixtures in a bulk volume, thanks to its ability to produce both high temperature and radical concentration in a large discharge zone. Recently, a feasibility study has been carried out to study plasma-assisted ignition under high-pressure high-temperature conditions similar to those inside an internal combustion engine. Ignition delay times were measured during the tests, and were shown to be decreasing under high-voltage plasma excitation. The discharge allowed instant control of ignition, and specific electrode geometry designs enabled volumetric ignition even at high-pressure conditions.
2014-04-01
Technical Paper
2014-01-1973
Atsushi Mizutani
Abstract This paper describes the development of high efficiency and compact bumper recycling equipment for facilitating bumper recycling globally. Various equipment to remove paint coat from bumper has been developed since 90s', using mechanical, physical or chemical method. However, it is difficult to promote bumper recycling without realizing cost effective overall system from paint coat removal to pelletizing. Our company jointly developed method of mechanically removing paint coat and has committed to bumper recycling in the form of outsourcing since 2000. In 2010, a dedicated plant for recycling bumpers was launched on the premises of our Oppama Assembly Plant in Japan. In the future, promoting bumper recycling at other overseas assembly plants is necessary as vehicle production will expand globally.
2008-03-31
Article
"Why can't a minivan look as good as a sports car?" lead exterior designer Joel Baek asked, then answered pointing to the Nissan Forum.
2008-04-11
Article
When supercar-beating performance is the main development bogey, vehicle engineers often embrace new solutions. Nissan went to BorgWarner for expertise in developing the six-speed dual-clutch transmission for its all-new 2008 GT-R, which features a rear-mounted transaxle.
2008-04-25
Article
Nissan is re-introducing its pickup model formerly known as the Nissan Pickup in Europe. The model was withdrawn when Euro-IV emissions regulations came into effect in 2006, mainly because the rotary injection pump-equipped, YD25 2.5-L, direct-injection, turbodiesel engine could not be readily adapted to meet the latest European emissions regulations. Now the model is powered by a common-rail injection version of the YD25 engine.
2008-09-04
Article
"The best way to get that understanding of your customers and their market is to simply go and see," said Robert Sump, Vice President of Component Engineering for the Nissan Technical Center North America. Engineers learn lessons from technical libraries, meetings, and seeing the world-at-large.
2011-09-09
Article
With major engineering support from Magna, Ford’s first battery-electric passenger car promises Leaf-blowing features including half the charge time as that claimed by Nissan using a 240-V SAE J1772 Class 2 charge source.
2011-10-18
Article
Through improvements to the MEA (membrane electrode assembly) and the separator flow path, Nissan engineers have significantly improved the power density of its newest generation fuel cell stack by 2.5 times greater than its 2005 model.
2012-03-12
Article
Q&A with Carla Bailo, Senior VP of Research & Development for Nissan Americas, which has a booming book of business in new vehicle development and fuel-cell core research, among other work.
2012-03-14
Article
Based on Nissan NV200 compact van, the new taxi could boost fuel economy 37% over the Ford Crown Victoria, the widely-used choice today. The 10-year contract with NYC includes provision for an all-electric version to be introduced by 2017.
2012-03-16
Article
Nissan’s goal with the DeltaWing experimental racecar is to explore new technologies for road cars. But it is a racecar, after all, and the Nissan DeltaWing will strut its motorsports stuff for the first time this June at the Le Mans 24 Hours.
2012-02-14
Article
The 2012 SAE World Congress is slated for April 24-26 in Detroit. With the exception of this preview article, the Technology Report section in this edition highlights some of the 1100-plus technical papers to be presented. For more information about the SAE 2012 World Congress, visit www.sae.org/congress.
2012-04-04
Article
The new sedan on display at the 2012 New York International Auto Show brings lighter weight, a new Jatco CVT, and use of the rearview camera for all exterior safety-sensing functions.
2012-04-23
Article
With the JX seven-passenger luxury crossover, Infiniti set out to build a family driver that met demands for interior flexibility and roominess, safety, and enhanced hospitality features.
2012-04-23
Article
The design execution of the CVT7 impressed the AEI editors to a high degree, making it one of the magazine’s 2012 Tech Award recipients for supplier innovation. Jatco engineers will have cutaways of its new CVT7 and CVT8 in booth 1024 at the 2012 SAE World Congress.
2012-04-24
Article
The shift to electric vehicles and plug-in hybrids heralds a major change for automotive technologies, one that will ripple out to many fields. One of the foremost is the electrical grid that will power these electrified vehicles while also drawing power from a car’s battery pack during peak usage periods.
2012-04-25
Article
The world's roads will be dramatically more congested in 2050 than today when 2 billion vehicles hit the streets.
2012-06-21
Article
The front seats in the redesigned Altima midsize sedan position each occupant very similarly to what a body experiences in outer space.
2012-06-01
Article
In addition to a conventional rear camera function, the wide-angle lens looks sideways to provide images for blind-spot and moving-object detection, and vehicle alignment with driving lane markings for lane-departure warning of forward drift.
2012-04-04
Article
With a ratio spread of seven, the CVT8 contributes much of the new Altima's 38-mpg highway rating.
2012-07-20
Article
Nissan has begun construction on its third manufacturing complex in Mexico and the second in the state of Aguascalientes. The complex is the result of a $2 billion investment announced last January to increase manufacturing capacity needed to satisfy demand for Nissan vehicles in the domestic and international markets.
2012-08-20
Article
Ron Moore, retired Division Chief of the McKinney (TX) Fire Department, has literally written the book on extrication involving vehicles with advanced high-strength steel structures, and he shared some of the challenges of this practice at the Great Designs in Steel seminar in Livonia, MI.
2012-08-24
Article
The SUV segment's last remaining body-on-frame model switches to a unibody platform shared with the Infiniti JX as Nissan engineers in Japan and the U.S. aim for a less weighty Pathfinder with a V6/CVT combo that gets better fuel economy than its predecessor.
2012-10-02
Article
At the 2012 Paris Motor Show, Nissan explores urban crossover SUV styling with a "realistic" fuel-cell electric drivetrain.
2012-10-09
Article
Two recent announcements attest to continuing efforts by government and industry to make the hydrogen fuel cell vehicle viable. On Oct. 5, the U.S. Department of Energy said it would make available $1 million for efforts to "identify cost-effective and efficient materials and processes to produce hydrogen from renewable energy sources and natural gas."
2009-09-17
Article
The On-road Vehicle NVH Simulator takes the evaluation out of the test lab and enables edited and modified vehicle sounds to be listened to, evaluated, and compared while driving on an actual road and on a variety of surfaces.
2009-08-26
Article
By cutting the number of servers it uses, Nissan North America has realized an energy-consumption decrease of 34% for that function at its plants in Smyrna and Decherd, TN. The number of servers was cut from 159 to 28.
Viewing 1 to 30 of 132

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