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2017-09-16
Journal Article
2017-01-9181
Zhongming Xu, Nengfa Tao, Minglei Du, Tao Liang, Xiaojun Xia
Abstract A coupled magnetic-thermal model is established to study the reason for the damage of the starter motor, which belongs to the idling start-stop system of a city bus. A finite element model of the real starter motor is built, and the internal magnetic flux density nephogram and magnetic line distribution chart of the motor are attained by simulation. Then a model in module Transient Thermal of ANSYS is established to calculate the stator and rotor loss, the winding loss and the mechanical loss. Three kinds of losses are coupled to the thermal field as heat sources in two different conditions. The thermal field and the components’ temperature distribution in the starting process are obtained, which are finally compared with the already-burned motor of the city bus in reality to predict the damage. The analysis method proposed is verified to be accurate and reliable through comparing the actual structure with the simulation results.
2017-09-04
Technical Paper
2017-24-0140
Roberto Aliandro Varella, Gonçalo Duarte, Patricia Baptista, Pablo Mendoza Villafuerte, Luis Sousa
Due to the need to properly quantify vehicle emissions in real world operation, Real Driving Emissions (RDE) test procedures will be used for measuring gaseous emissions on new EURO 6 vehicles.at the RDE 1 & 2: Commission Regulation (EU) 2016/427 of 10 March 2016 amending Regulation (EC) No 692/2008 as regards emissions from light passenger and commercial vehicles. Updated regulations have been enhanced to define RDE tests boundaries and data analysis procedures, in order to provide an accurate way to obtain representative results. The boundary conditions defined for vehicle testing include external atmospheric temperature, which can range from 0ºC to around 30ºC, for moderate conditions and -7oC up to 35oC for extended conditions in RDE tests. As a result of this range of possible test ambient temperature, pollutant emissions and energy consumption can vary considerably.
2017-09-04
Technical Paper
2017-24-0069
Hyunwook Park, Jugon Shin, Choongsik Bae
Spray and combustion characteristics of diesel fuel were investigated in order to get a better understanding of the evaporation and combustion behavior under simulated cold-start conditions of a diesel engine. The experiment was conducted in a constant volume combustion chamber and the target ambient conditions were selected as the engine cranking. Mie scattering and shadowgraph techniques were conducted to visualize the liquid and vapor phase of the fuel under non-combustion condition (O2 concentration=0%). In-chamber pressure and direct flame visualization were acquired for spray combustion condition (O2 concentration=21%). The fuel was injected with an injection pressure of 30MPa, which is a typical value during cranking period. The liquid penetration of the fuel was increased at 573K of ambient temperature compared to that at 663K due to the poor evaporation characteristic and the increased fuel viscosity from the lower fuel temperature.
2017-06-20
WIP Standard
AS25042D
Scope is unavailable.
2017-06-20
WIP Standard
AS25043D
Scope is unavailable.
CURRENT
2017-06-20
Standard
AS85848/1A
SCOPE IS UNAVAILABLE.
2017-06-17
Journal Article
2017-01-9078
Dong Gao, MiaoHua Huang, Jiangang Xie
In order to solve the environmental pollution and energy crisis, Electric Vehicles (EVs) have been developed rapidly. Lithium-ion (Li-ion) battery is the key power supply equipment for EVs, and the scientific and accurate prediction of its Remaining Useful Life (RUL) has become a hot topic in the field of new energy research. The internal resistance and capacity are often used to characterize the Li-ion battery State of Health (SOH) from which RUL is obtained. However, in practical applications, it is difficult to obtain internal resistance and capacity information by using the non-intrusive measurement method. Therefore, it is necessary to extract the measurable parameters to characterize the degradation of Li-ion battery. At present, the methods of extracting health indicators based on measurable parameters have gained preliminary results, but most of them are derived from the Li-ion battery discharging data.
2017-06-16
WIP Standard
J1113/11
This SAE Standard defines methods and apparatus to evaluate electronic devices for immunity to potential interference from conducted transients along battery feed or switched ignition inputs. Test apparatus specifications outlined in this procedure were developed for components installed in vehicles with 12-V systems (passenger cars and light trucks, 12-V heavy-duty trucks, and vehicles with 24-V systems). Presently, it is not intended for use on other input/output (I/O) lines of the device under test (DUT).
2017-06-15
WIP Standard
AIR5919B
This SAE Aerospace Information Report (AIR) is intended to document and provide access to information obtained by an industry survey. It summarizes and documents data regarding possible alternatives to the use of cadmium plating on general connectors and connector accessories typically used in aerospace and military defense electrical interconnect systems.
2017-06-09
WIP Standard
AS29600B
This specification covers miniature, composite, high density, threaded coupling, self locking, circular, environment resistant, electrical connectors utilizing removable crimp contacts, and associated hardware, which are capable of continuous operation within a temperature range of -65° to +175°C. These connectors are supplied under a AS9100 reliability assurance program.
CURRENT
2017-06-09
Standard
AS31081B
SCOPE IS UNAVAILABLE.
2017-06-08
WIP Standard
J2801
This SAE Standard applies to 12 V, flooded and absorptive glass mat lead acid automotive storage batteries of 200 minutes or less reserve capacity and cold crank capacity greater than 200 amperes. This life test is considered to be comprehensive in terms of battery manufacturing technology; applicable to lead-acid batteries containing wrought or cast positive grid manufacturing technology and providing a reasonable correlation for hot climate applications. This document is intended as a guide toward standard practice, but may be subject to change to keep pace with experience and technical advances.
CURRENT
2017-06-07
Standard
AS81659B
This specification covers two series of electrical, rectangular connectors with crimp type removable contacts. These connectors are provided with single, dual, triple, and quadruple insert shell configurations.
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