Transient NOx Characteristics of Freight Vehicles with EGR System in Real Traffic Conditions

2005 ◽  
Author(s):  
Yutaka Takada ◽  
Norifumi Takada ◽  
Norimasa Iida
Keyword(s):  
Traffic Conditions ◽  
Real Traffic ◽  
Freight Vehicles

Improvement of Fuel Economy by Eco-Driving with Devices for Freight Vehicles in Real Traffic Conditions

2007 ◽  
Author(s):  
Yutaka Takada ◽  
Shigeru Ueki ◽  
Akira Saito ◽  
Naoya Sawazu ◽  
Yayoi Nagatomi
Keyword(s):  
Fuel Economy ◽  
Traffic Conditions ◽  
Real Traffic ◽  
Freight Vehicles

Study to Compare CO2 Emissions from M1 Bharat Stage VI Passenger Vehicles at Chassis Dynamometer and Indian Real Traffic Conditions

2021 ◽  
Author(s):  
KIRAN THAKARE ◽  
ABHAY SINGH ◽  
OBAID ASHRAF Shah ◽  
REVANTH KUMAR bathina ◽  
ASHISH KULKARNI
Keyword(s):  
Co2 Emissions ◽  
Chassis Dynamometer ◽  
Traffic Conditions ◽  
Passenger Vehicles ◽  
Real Traffic

scholarly journals The application of the CO2MPAS model for vehicle CO2 emissions estimation over real traffic conditions

2020 ◽  
Author(s):  
Caterina Mogno ◽  
Georgios Fontaras ◽  
Vincenzo Arcidiacono ◽  
Dimitrios Komnos ◽  
Jelica Pavlovic ◽  
...  
Keyword(s):  
Co2 Emissions ◽  
Traffic Conditions ◽  
Real Traffic

scholarly journals Simultaneous Localization and Map Change Update for the High Definition Map-Based Autonomous Driving Car

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3145 ◽  
Author(s):  
Kichun Jo ◽  
Chansoo Kim ◽  
Myoungho Sunwoo
Keyword(s):  
Evidence Theory ◽  
Autonomous Driving ◽  
High Definition ◽  
Driving System ◽  
The Real ◽  
Traffic Conditions ◽  
Autonomous Cars ◽  
Vehicle Position ◽  
Autonomous Driving System ◽  
Real Traffic

High Definition (HD) maps are becoming key elements of the autonomous driving because they can provide information about the surrounding environment of the autonomous car without being affected by the real-time perception limit. To provide the most recent environmental information to the autonomous driving system, the HD map must maintain up-to-date data by updating changes in the real world. This paper presents a simultaneous localization and map change update (SLAMCU) algorithm to detect and update the HD map changes. A Dempster–Shafer evidence theory is applied to infer the HD map changes based on the evaluation of the HD map feature existence. A Rao–Blackwellized particle filter (RBPF) approach is used to concurrently estimate the vehicle position and update the new map state. The detected and updated map changes by the SLAMCU are reported to the HD map database in order to reflect the changes to the HD map and share the changing information with the other autonomous cars. The SLAMCU was evaluated through experiments using the HD map of traffic signs in the real traffic conditions.

scholarly journals Comparing Speed Estimations from a Moving Vehicle in Different Traffic Scenarios: Absence versus Presence of Traffic Flow

2006 ◽  
Vol 9 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Ángela Conchillo ◽  
Miguel Ángel Recarte ◽  
Luis Nunes ◽  
Trinidad Ruiz
Keyword(s):  
Traffic Flow ◽  
Experimental Studies ◽  
Speed Estimation ◽  
Estimation Task ◽  
Driving Experience ◽  
Moving Vehicle ◽  
Traffic Conditions ◽  
Traffic Environment ◽  
Subject Variables ◽  
Real Traffic

The aim of this research was to study the performance in a speed estimation task of a passenger travelling in a real car in different scenarios: a closed track used in previous experimental studies was compared with interurban traffic environment involving a secondary road and a highway. At the same time, the effect of sex and driving experience on speed estimation was analyzed. Thirty-six participants (18 male and 18 female, half of each group being drivers and half non-drivers) estimated the speed of the car in which they travelled as passengers. The actual speed values varied in the range of 40-100 km/h for the secondary road, 70-120 km/h for the highway condition, and 40-120 km/h for the track. The results obtained for the track in previous studies (Recarte & Nunes, 1996; Recarte, Conchillo, & Nunes, 2004, 2005) were replicated in the same condition and were also verified for the secondary road scenario. However, a different pattern of errors was found for the highway. From the viewpoint of psychophysics, the participants were more accurate on the without-traffic track than in real traffic conditions, considered as a whole. The differences found between road and highway are discussed. No effect was found for between- subject variables, sex, and driving experience.

THE PRECISE MEASUREMENT OF CAR VELOCITY

Transport ◽  
2012 ◽  
Vol 27 (2) ◽  
pp. 138-142 ◽  
Author(s):  
Julius Barzdžiukas ◽  
Stasys Vygantas Augutis ◽  
Rimvydas Povilas Žilinskas
Keyword(s):  
Experimental Data ◽  
Precise Measurement ◽  
Optical Measurements ◽  
Velocity Measurements ◽  
Testing Area ◽  
Traffic Conditions ◽  
Wide Range ◽  
Reference Distance ◽  
Real Traffic ◽  
Stationary Velocity

The system for precise measurement of car velocity is using lasers and reference distance fixed on the car. Primary application for this system is verification and calibration of stationary velocity meters without the need for disassembling or transporting them to testing area. Velocity measurements can be performed under the real traffic conditions. Principle of operation, calibration of the measurement system and uncertainties are provided. Some solutions used in this system operate in a wide range of possible environmental conditions. Additionally, ABS sensors were used for dynamic car velocity evaluation. Possibilities of this system, when used in combination with optical measurements, are provided. Experimental data demonstrates ABS sensor applicability in measurements with different road types, tire pressures and temperatures.

scholarly journals THE PARAMETERS OF PASSENGER CARS ENGINE IN TERMS OF REAL DRIVE EMISSION TEST

2014 ◽  
Vol 32 (4) ◽  
pp. 43-50 ◽  
Author(s):  
Jerzy Merkisz ◽  
Marianna Jacyna ◽  
Agnieszka Merkisz-Guranowska ◽  
Jacek Pielecha
Keyword(s):  
Environmental Performance ◽  
Gasoline Engine ◽  
Operating Conditions ◽  
Passenger Cars ◽  
Limit Values ◽  
Traffic Conditions ◽  
Passenger Vehicles ◽  
Certification Tests ◽  
Emission Limit ◽  
Real Traffic

This paper presents the preliminary concept research to develop the test used in the measurement of emissions in real traffic conditions for passenger vehicles. Work based on the lack of legal solutions for determining the environmental performance of light vehicles – as opposed to heavy-duty vehicles for which such regulations have specified. The elaboration is to compare the emission test used in clinical approval of passenger cars, while the synthesis of the results obtained under different conditions road tests. The intention is to develop a test for assessing the ecological vehicle in real traffic conditions, where restrictions will only drive type (gasoline engine, diesel engine, hybrid vehicle), which is consistent with the requirements of the certification tests. The result should be the foundation for the development of the test in terms of: the duration, to determine the operating conditions and vehicle and proposals for emission limit values.

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