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2012-09-24
Technical Paper
2012-01-1946
Reno Filla
Out of necessity, emission and fuel consumption test cycles are a simplified representation of the real-life use of a vehicle or component that is assumed to be most common. In reality, variations are introduced by both the driver and the environment - and to a lesser degree also by the vehicle itself through performance deviations because of tolerances in the components' characteristics. However, since such simplified test cycles exist and are accepted (or even required by law), OEMs tend to use them also in product development to benchmark their products against the competition, and to make decisions on how to optimize design. While this approach might give acceptable results for on-road vehicles, it fails to capture reality in the case of versatile working machines. Here, the variety of possible applications cannot be covered by one common application but rather demands a mix of several cycles.
2008-06-19
Article
The battery-powered hybrid technology used throughout the automotive industry is making its way into the off-highway marketplace. Volvo Construction Equipment demonstrated a prototype of its L220F hybrid wheel loader at ConExpo, saying the vehicle can save fuel and extend engine lifetimes.
2008-06-19
Article
Introducing a unique combination of lifting performance and the 360°-swing functionality of an excavator, Volvo Construction Equipment will soon deliver to the market a new product class of pipelaying machines. Developed from a patented adaptation of Volvo excavator machines combined with modern lifting technology, the new pipelayers offer a number of technical advantages over traditional pipelaying dozers with side-based booms.
2012-01-18
Article
Volvo Construction Equipment’s Hauler Chassis can be fitted with an array of superstructures that enable an endless range of applications to be conducted over difficult terrain.
2009-09-30
Article
The introduction of the EW230C wheeled excavator, Volvo’s largest to date, is said to offer improved stability in heavier lift operations.
2011-04-04
Article
Volvo Construction Equipment (CE) plans to spend US$100 million in its Shippensburg, PA, manufacturing facility over the next couple of years, and to start production of Volvo wheel loaders, excavators, and articulated haulers in North America.
2008-11-21
Article
Volvo Construction Equipment will move the majority of its motor grader activities currently located in Goderich, Ontario, Canada, to the company’s facility in Shippensburg, PA. The decision to consolidate the industrial operations for road machinery in North America to Shippensburg was taken to improve the competitiveness and profitability of the total road machinery business and to reduce exposure to exchange rate fluctuations within North America.
2010-05-10
Article
Volvo Construction Equipment says its new high-reach demolition excavator provides a reliable, durable machine purpose-built for the rigors of primary and secondary demolition applications.
2010-02-12
Article
JCB and Volvo Construction Equipment (CE) have entered into a framework agreement to cooperate on the engineering and manufacturing of skid-steer and compact tracked loaders for distribution under their respective brands and through their respective global dealer networks.
2015-08-28
Article
Volvo Construction Equipment's EC160E is the newest model of the E-Series crawler excavator family. It is equipped with a Tier 4 Final engine and advanced cabin electronics.
2016-05-04
Article
At the recent Bauma 2016 in Munich, Volvo Construction Equipment President Martin Weissburg revealed the largest excavator and articulated hauler the company has ever produced, and provided his thoughts on connectivity trends and the market in China.
2016-09-16
Article
Manipulator position sensing is a key issue in the study of hydraulic excavator automation. A neural network-based vision system was developed to estimate the boom, arm, and bucket cylinder displacements of an excavator manipulator during a grading operation simulation.
2016-12-08
Article
Automation is one of three main technology areas—along with connectivity and alternative drivelines and fuels—that Volvo Construction Equipment is devoting significant R&D resources to further develop. The company recently demonstrated a prototype autonomous wheel loader and articulated hauler working together.
2015-03-05
Article
Due to the high demand of fuel-efficient construction equipment, significant research effort has been dedicated to improving excavator efficiency.
2015-01-09
Article
Volvo Group announced in late 2014 that Volvo Construction Equipment will discontinue development and production of backhoe loaders and motor graders in Europe and the Americas and will transfer these operations to its Chinese company, SDLG.
2014-02-14
Article
As Vice President of Product Platforms for Volvo Construction Equipment, Alan Berger (SAE member, 2013) is responsible for the life-cycle management of the product line, its profitability, commercial performance, evolution, and strategy.
2017-01-23
Article
Volvo Construction Equipment offers increased payload capacities among other features on the new A45G articulated hauler.
2014-09-30
Technical Paper
2014-01-2402
Bradley Thompson, Hwan-Sik Yoon, Jaehong Kim, Jae Lee
Abstract Due to the high demand of fuel efficient construction equipment, significant research effort has been dedicated to improving excavator efficiency. Among various possibilities, methods to recuperate energy during cab swing motion have been widely examined. Electric and hydraulic hybrids designs have shown to greatly improve fuel efficiency but require drastic design changes. The redesigned systems thus require many hours of operation to offset the manufacturing costs with fuel savings. In this research, a relatively simple swing energy recuperation system is presented using an additional accumulator, fixed displacement hydraulic motor, and control valves. With the system, hydraulic fluid is stored in an accumulator, and a simple controller opens a valve to allow the stored energy to assist the engine in running the main pumps.
2016-09-27
Technical Paper
2016-01-8122
Jiaqi Xu, Hwan-Sik Yoon, Jae Y. Lee, Seonggon Kim
Abstract A neural network-based computer vision system is developed to estimate position of an excavator manipulator in real time. A camera is used to capture images of a manipulator, and the images are down-sampled and used to train a neural network. Then, the trained neural network can estimate the position of the excavator manipulator in real time. To study the feasibility of the proposed system, a webcam is used to capture images of an excavator simulation model and the captured images are used to train a neural network. The simulation results show that the developed neural network-based computer vision system can estimate the position of the excavator manipulator with an acceptable accuracy.
2016-09-27
Technical Paper
2016-01-8115
Jaehong Kim, Jae Y. Lee, Ahnkyun Jung
Abstract Construction equipment machines today benefits from hydraulic system due to high power density. And, the development of an excavator using “open-center system with spool valves”, in general, requires iterative hardware design tuning activities for optimized performance and fuel economy while matching operator’s commands. Instead of traditional hydraulic and multi-body dynamic simulation with an operator simulation model, this paper focuses on the methodology development of real-time simulation model for an excavator, including the hydraulic system of an excavator’s boom, arm, bucket, and travel as well as multi-body dynamic system. The real-time capability is realized by reducing unnecessary compressible units and achieving numerical stability at sudden pressure changes when valves open and close. The real-time simulation model has been verified later with an actual Volvo CE excavator machine, and the correlation was quite satisfactory.
Viewing 1 to 20 of 20