Think Big - Cost-Effective Coating of Heavy-Duty Parts

2020 ◽  
Vol 13 (4) ◽  
pp. 18-21
Author(s):  
Keyword(s):  
Cost Effective ◽  
Heavy Duty

scholarly journals An active seat suspension design for vibration control of heavy-duty vehicles

2016 ◽  
Vol 35 (4) ◽  
pp. 264-278 ◽  
Author(s):  
Donghong Ning ◽  
Shuaishuai Sun ◽  
Jiawei Zhang ◽  
Haiping Du ◽  
Weihua Li ◽  
...  
Keyword(s):  
Ride Comfort ◽  
Cost Effective ◽  
Basic Structure ◽  
Suspension System ◽  
Heavy Duty ◽  
Linear Motors ◽  
Seat Suspension ◽  
Output Torque ◽  
Hydraulic Cylinders ◽  
Heavy Duty Vehicles

This paper presents the design, fabrication and testing of an innovative active seat suspension system for heavy-duty vehicles. Rather than using conventional linear actuators, such as hydraulic cylinders or linear motors, which need to be well maintained and are always expensive when high force outputs are required, the proposed seat suspension system directly applies a rotary motor in order to provide the required active actuation, without changing the basic structure of the existing off-the-shelf seat suspension. A gear reducer is also applied to amplify the output torque of the motor so that a high output torque can be achieved using a low rated power motor. A static output feedback [Formula: see text] controller with friction compensation is designed to actively reduce seat vibration. Experiments are carried out to test the fabricated suspension prototype. The experimental results show that this type of seat suspension can achieve greater ride comfort in the frequency range of 2–6 Hz than a passive seat suspension. The newly designed active seat suspension is much more cost effective and can be suitable for heavy-duty vehicles.

Combined Cycle Inlet Air Cooling by Cold Thermal Storage: Aeroderivative vs. Heavy Duty GT Comparison

2011 ◽  
Author(s):  
G. Barigozzi ◽  
N. Palestra ◽  
A. Perdichizzi ◽  
G. Salvitti
Keyword(s):  
Cost Effective ◽  
Thermal Storage ◽  
Combined Cycle ◽  
Numerical Code ◽  
Specific Power ◽  
Air Cooling ◽  
Heavy Duty ◽  
Reference Case ◽  
Pressure Drops ◽  
Pressure Losses

An assessment of energetic performance achievable by GT inlet air cooling through cold thermal storage is presented. Results have been obtained by a numerical code specifically developed to model the whole system behavior all over a year. Some cases with hot climatic condition have been compared and discussed in order to enlighten performance differences due to GT characteristics and possible enhancement strategies for different configurations. An existing 127 MWe combined cycle power plant with a twin GT configuration was assumed as a reference case. Two heavy-duty units with different technology levels have been compared with an advanced aero-derivative model, in the range of 40 MW power output. Aero-derivative unit provided a much better performance than the more advanced heavy-duty model; this was strictly related to the higher sensitivity to inlet air temperature of the aero derivative unit. The comparison between the two heavy-duty GTs has clearly shown that a high specific power is needed to obtain cost-effective solutions for inlet air cooling systems. The analysis for the considered GT units was then extended also to a plant configuration including an inlet air supercharging system. The boost fan head has been selected in order to only compensate all inlet pressure losses, i.e. inlet duct, filters and air coils pressure drops.

Semi-Active Suspension Systems for Heavy-Duty Vehicles: Multibody Model Development, Identification and Control Algorithm Evaluation

2009 ◽  
Author(s):  
Matteo Grott ◽  
Francesco Biral ◽  
Roberto Oboe ◽  
Alberto Cis ◽  
Eugenio Vincenti
Keyword(s):  
New Technologies ◽  
Model Development ◽  
Cost Effective ◽  
Active Suspension ◽  
Dynamical Behaviour ◽  
Bench Test ◽  
Heavy Duty ◽  
Multibody Model ◽  
Suspension Systems ◽  
Heavy Duty Vehicles

The design of suspension systems for heavy-duty vehicles covers a specific field of automotive industry. During the past few years there has been an increasing demand in power capabilities, loads and driving speeds of heavy duty vehicles. Therefore, off-highway vehicle manufacturers have shown their interest in employing new technologies. This work focuses on the investigation of hydro-pneumatic suspension systems for heavy duty vehicles, in particular on the benefits of a semi-active solution compared to a passive one. The main targets of this activity is the study of the dynamical behaviour of agricultural tractors and the design of a cost-effective controllable suspension, capable to adapt the tractor dynamical behaviour, under different road and load conditions. The work started with the development of a multibody model of the suspension test bench to be used for control solution comparisons. The multibody model was experimentally validated by characterizing the cylinder friction, tire parameters and Frequency Response (F.R.) of the suspension bench test equipped with a passive solution. As a last step the evaluation of different control algorithms for hydraulic semi-active suspension was carried out via Adams/Matlab co-simulation technique.

Innovative Forging Process Allows Safer and Cost Effective Heavy Duty Landing String for Deepwater Applications

2016 ◽  
Author(s):  
Laurent Bordet ◽  
Jonathan Franchi ◽  
Scott Granger ◽  
Andre Vierke
Keyword(s):  
Cost Effective ◽  
Heavy Duty ◽  
Forging Process

scholarly journals The Evolution of a Reliable Gas Turbine

1982 ◽  
Author(s):  
D. E. Brandt ◽  
E. J. Walsh ◽  
R. G. Kunkel
Keyword(s):  
Gas Turbine ◽  
Cost Effective ◽  
Heavy Duty ◽  
Field Validation ◽  
Heavy Duty Gas Turbine ◽  
Design Deficiencies ◽  
Turbine Design

This paper presents the evolution of a reliable and cost effective heavy duty gas turbine. Its pedigree is discussed, including the correction of deficiencies in an earlier turbine design. Specific topics addressed include the correction of field developed design deficiencies in the earlier turbine, the prototype and field validation of these earlier turbine deficiencies and the prototype and field validation of the new turbine which was scaled from the earlier design.

Variable Asymmetric Turbine for Heavy Duty Truck Engines

2013 ◽  
Author(s):  
Sebastian Schmidt ◽  
Martin G. Rose ◽  
Markus Müller ◽  
Siegfried Sumser ◽  
Elias Chebli ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
High Efficiency ◽  
Cost Effective ◽  
Large Mass ◽  
Test Stand ◽  
Heavy Duty ◽  
Passenger Cars ◽  
Large Variability ◽  
Variable Turbine Geometry ◽  
Heavy Duty Truck

Turbochargers with variable turbine geometry (VGT) are established in diesel engines for passenger cars because of the beneficial effect on transient operation. The variability permits the reduction of exhaust back pressure, resulting in lower fuel consumption. There are only a few applications in heavy duty truck engines due to increased mechanical complexity and vulnerability to failure. This paper presents a turbine concept with a simple variability developed for a heavy duty engine. The variability is achieved upstream of the rotor by changing the sectional area of the volute. This can be done through a rotationally movable ring which shifts the circumferential position of the volute tongues. These separate both scrolls of a double segment turbine and can be rotated by an electric actuator. The performance maps measured at the hot gas test stand show the large variability of the flow parameter and the high efficiency levels over the operating range of the variable asymmetric turbine (VAT). The flow field is computed by the use of 3D-CFD simulations in order to analyze the loss-generating mechanisms that occur within the machine. Test runs on an engine test stand demonstrate the high potential of the concept concerning reduction of fuel consumption and a wide scope of realizable EGR rates in order to reduce NOx emissions in a cost-effective way. The resultant large mass flow variability allows the deletion of the waste gate and enables efficiency improvements.

scholarly journals Development of a Cost-Effective Heavy-Duty Lead-Acid Battery Capacity Tester

2020 ◽  
Author(s):  
Mustafa ERGÜN ◽  
Habib KAYMAZ ◽  
Ümit TERZİ ◽  
Irfan GUNEY
Keyword(s):  
Cost Effective ◽  
Lead Acid Battery ◽  
Heavy Duty ◽  
Battery Capacity ◽  
Lead Acid

scholarly journals DPF retrofit program in Israel – effects of diesel particle filters on performance of in-use buses

2017 ◽  
Vol 170 (3) ◽  
pp. 176-178
Author(s):  
Leonid TARTAKOVSKY ◽  
Rafael FLEISCHMAN
Keyword(s):  
Engine Performance ◽  
Cost Effective ◽  
Pilot Project ◽  
Economic Incentives ◽  
Particulate Emissions ◽  
Heavy Duty ◽  
Effective Measure ◽  
High Particle ◽  
Diesel Buses ◽  
Heavy Duty Diesel

A long service life of heavy-duty diesel vehicles results in a large number of older-technology trucks and buses of various types running on roads nowadays. Cleaning up exhaust gases of these older vehicles gives an opportunity to improve air quality at affordable costs. Retrofitting older buses with diesel particulate filters (DPF) is a cost-effective measure to quickly and efficiently reduce particulate matter (PM) emissions and contribute to mitigation of air pollution in urban conglomerates. In this paper, the milestones on a way to wide-scale retrofitting of heavy-duty vehicles with DPF are discussed on the example of Israel DPF retrofit program. Crucial importance of a balanced governmental approach combining regulation and economic incentives, together with collaboration of government, academia and vehicle operators, is underlined. Main results of the one-year pilot project focused on urban and intercity buses are discussed. Impact of DPF retrofitting on particulate emissions and engine performance and maintenance aspects of in-use diesel buses is analyzed. Very high particle filtration efficiency (in average, about 97%) together with relatively low fuel economy penalty (0.6–1.8%, depending on the bus type) are proved. Vital importance of careful monitoring and correct maintenance of DPF-equipped vehicles is underlined.

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