Impact of Signalized Intersections on CO2 and NOx Emissions of Heavy Duty Vehicles

Pollutant emissions have been a topic of interest in the last decades. Not only environ mentalists but also governments are taking rapid action to reduce emissions. As one of the main contributors, the transport sector is being subjected to strict scrutiny to ensure it complies with the short and long-term regulations. The measures imposed by...

From Laboratory to Road: A 2018 update of official and 'real world' fuel consumption and CO2 values for passenger cars in Europe

Towards Ultra-Low NOx Emissions within GHG Phase 2 Constraints: Main Challenges and Technology Directions

Robust fuel consumption estimation for on-line optimization of diesel engines

Accurate estimation of Brake Specific Fuel Consumption (BSFC) is required to enable on-line optimization of real-world fuel efficiency of diesel engines. This work aims to develop a BSFC estimation method which is accurate enough for an adaptive controller for on-line engine optimization, e.g., using Extremum Seeking. In this paper two different...

Battery Peak Power Shaving Strategy to Prolong Battery Life for Electric Buses

This paper presents a battery peak power shaving strategy for battery electric buses. The developed strategy restricts the battery charge/discharge power when the propulsion power demand is high to avoid high deterioration of the battery capacity during operation. Without reducing the propulsion power, the developed strategy optimizes the power...

Impact assessment for cooperative urban traffic management applications based on microscopic traffic flow simulation

The EU FP7 project eCoMove created an integrated solution for more energy efficient road transport based on cooperative technology. The project's core concept assumed that there is theoretical minimum energy consumption achievable with the "perfect eco-driver" travelling through the "perfectly eco-managed" road network. Microscopic traffic flow...

Fuel-electricity mix and efficiency in Dutch plug-in and range-extender vehicles on the road

For the Dutch Ministry for Infrastructure and the Environment data of plug-in vehicles was collected. Data concerning fueling and charging of plug-in vehicles is collected from lease companies, a fuel-pass company, and the charging infrastruture organisation. More than 10% of the total Dutch plug-in fleet is covered. The electricity data is...

Experimental demonstration of a new model-based SCR control strategy for cleaner heavy-duty diesel engines

Selective catalytic reduction (SCR) is a promising diesel aftertreatment technology that enables low nitrogen oxides (NOx) tailpipe emissions with relatively low fuel consumption. Future emission legislation is pushing the boundaries for SCR control systems to achieve high NOx conversion within a tailpipe ammonia (NH3) slip constraint, and to...

Fuel consumption and associated emissions from seagoing ships at berth derived from an on-board survey

A methodology is presented to estimate the emissions of ships at berth based on their actual fuel consumption and the fuel quality. Accurate estimates of emissions from ships at berth demand reliable knowledge of the fuel consumption while at berth and associated fuel characteristics. However, assured information about energy use and fuel...

Use of a vehicle-modelling tool for predicting CO2 emissions in the framework of European regulations for light goods vehicles

The reduction of CO2 emissions and fuel consumption from road transportation constitutes an important pillar of the EU commitment for implementing the Kyoto Protocol. Efforts to monitor and limit CO2 emissions from vehicles can effectively be supported by the use of vehicle modelling tools. This paper presents the application of such a tool for...

Driving style and traffic measures: Influence on vehicle emissions and fuel consumption

This paper describes the influence on vehicle emissions and energy consumption of different vehicle parameters and driving style as well as of traffic measures taken in order to increase transport safety or to reduce traffic jams. This should allow the Flemish Regional Government to perform more realistic modelling of the impact of transport on...

Real-world driving behaviour

With increasing complexity of engine management system there is a tendency for traditional driving cyles to become further and further removed from reality. So for a sensible evaluation of emissions and fuel consumption of road vehicles in the field there is an urgent need for 'real-world' driving patterns. Existing 'standard' driving cycles can...

Audi Duo demonstration project: Environmental comparision and user survey

This paper describes the results and conclusions of a methodology for the assessment of environmental performance. This methodology was applied to a demonstration project conducted in the Netherlands with 10 Audi Duo parallel hybrid vehicles. During the course of the project, the vehicles were driven by a wide range of users and user groups. By...

Het Audi Duo concept in de praktijk: milieuprestaties en de kansen en belemmeringen voor marktintroductie, bepaald in het Demonstratieproject Audi Duo

This report describes the methodology and results for an assessment of environmental performance of a parallel hybrid vehicle, as well as an investigation into user experiences that may promote or hinder market introduction of this type of car. A parallel hybrid vehicle is powered either by a combustion engine or by an electric engine. For the...

Techno-economische beoordeling van een foto-elektrochemische reactor

-

Urban air quality improvement by using a CNG lean burn engine for city buses

The use of compressed natural gas (CNG)-fuelled lean-burn city bus engines has a significant potential for air quality improvement in urban areas. Particularly important is the reduction of NO, as well as particulate and non regulated HC-emissions. For this reason, a CNG-fuelled, lean-burn, turbocharged, intercooled engine equipped with...

EGR technology for lowest emissions

An EGR system for turbocharged and aftercooled HD diesel engines has been demonstrated on a 12 litre 315 kW engine with 4 valves per cylinder and a high pressure injection system. In this system exhaust gas is tapped off before the turbine, run through a cooler and mixed with the intake air after the compressor and aftercooler. The EGR system...