An Approach to Simulate Chassis Dynamometer Test Cycles with Engine Dynamometer Test Cycles for Heavy-Duty Urban Buses

1996 ◽  
Author(s):  
Mohamed I. Salem ◽  
Reda M. Bata
Keyword(s):  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Dynamometer Test

Fuel Economy Performance of the Highly Efficient Fuel Economy Oils Using Chassis Dynamometer Test

1993 ◽  
Author(s):  
Kenyu Akiyama ◽  
Fumio Ueda ◽  
Johji Miyake ◽  
Kazuyoshi Tasaka ◽  
Shinichi Sugiyama
Keyword(s):  
Fuel Economy ◽  
Chassis Dynamometer ◽  
Highly Efficient ◽  
Dynamometer Test

Method for Translation of In-Use Fuel Consumption and NOX Emissions Between Different Heavy-Duty Vehicle Routes

2011 ◽  
Author(s):  
Oscar F. Delgado ◽  
Nigel N. Clark ◽  
Gregory J. Thompson
Keyword(s):  
Fuel Consumption ◽  
Relative Error ◽  
Nox Emissions ◽  
Vehicle Speed ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Simple Method ◽  
The Road ◽  
Heavy Duty Vehicle ◽  
Vehicle Activity

Portable emissions measurement systems (PEMS) are used to perform in-use measurements for emissions inventory and regulatory applications. PEMS data represent real world conditions more accurately than chassis dynamometer or engine dynamometer testing, arguably being the most realistic method of determining exhaust emissions over a certain driving route. However, measured emissions and fuel consumption depend strongly on both the route followed and the traffic situation that the vehicle encounters. A tool for translation of emissions and fuel consumption between diverse types of vehicle activity is required. The purpose of this paper is to assess the possibility of using route-averaged properties (kinematic parameters) for translation of fuel consumption and NOx emissions for a set of eighteen heavy-duty vehicles operating over up to eight different driving routes. A linear model developed for heavy-duty vehicle chassis dynamometer data modeling has been extended to in-use heavy-duty vehicle data. Two approaches were implemented; the first approach mimicked the prior chassis dynamometer work by incorporating average vehicle speed and average positive acceleration and the second approach incorporated road grade in a characteristic power parameter. The end result is a simple method which was shown to be accurate for estimation of fuel consumption (within 5% relative error) and NOx emissions (within 12% relative error) for over-the-road vehicles over “unseen” roads or traffic situations, without the need to perform additional over-the-road tests.

Emissions From Heavy-Duty Trucks Converted to CNG

1992 ◽  
Vol 114 (3) ◽  
pp. 561-567 ◽  
Author(s):  
S. G. Fritz ◽  
R. I. Egbuonu
Keyword(s):  
Natural Gas ◽  
Fuel Economy ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Compressed Natural Gas ◽  
Diesel Particulate ◽  
Energy Equivalent ◽  
Gasoline Engines ◽  
Gas Fuel ◽  
Model Year

Emissions are reported for four heavy-duty trucks, which were converted to operate on compressed natural gas fuel. Two 1988 model year Ford F700 Series trucks equipped with 7.0 L gasoline engines and two 1986 model year GMC trucks equipped with DDC 8.2 L diesel engines were tested on a heavy-duty chassis dynamometer in a baseline condition and again after conversion to natural gas. The vehicles were tested over the EPA Urban Dynamometer Driving Schedule for Heavy-Duty Vehicles and at no-load curb idle. Regulated emissions of NOx, CO, HC, and diesel particulate, along with nonmethane hydrocarbons, are reported in grams/mile. Fuel economy is reported in energy-equivalent miles per gallon of gasoline or diesel fuel.

Exhaust Emissions from In-Use Heavy Duty Vehicles Tested on a Transportable Transient Chassis Dynamometer

1992 ◽  
Author(s):  
D. H. Ferguson ◽  
Mridul Gautam ◽  
W. G. Wang ◽  
Nigel Clark ◽  
D. W. Lyons ◽  
...  
Keyword(s):  
Exhaust Emissions ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

Vehicle Robot Driver Research and Development Based on Servo Motor Control

2014 ◽  
Vol 709 ◽  
pp. 272-275
Author(s):  
Zhong Pan Zhu ◽  
Ai Min Du ◽  
Zhi Xiong Ma ◽  
Wen Yang Zhang ◽  
Chang Guo Fan
Keyword(s):  
Motor Control ◽  
Research And Development ◽  
Developed Countries ◽  
Servo Motor ◽  
Chassis Dynamometer ◽  
System Composition ◽  
Key Technologies ◽  
Functional Features ◽  
Dynamometer Test

Vehicle robot drivers are widely used in automotive tests especial for some tests on automotive chassis dynamometer. However, China has less technology accumulations than west developed countries in the field of research and development of robot driver. In order to promote the developments of the domestic robot driver technology, a vehicle robot driver based on servo motor control was developed for automobile chassis dynamometer test, its system composition, functional features, and key technologies in developing process were expounded specifically in this paper.

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