Thermal Loading In A High Performance Air-Cooled Diesel Engine For Small Van

1984 ◽  
Author(s):  
Giancarlo Ferrari ◽  
Marco Nuti ◽  
Corrado Casci
Keyword(s):  
Diesel Engine ◽  
High Performance ◽  
Thermal Loading

Effect of coolant additives on thermal loading of a diesel engine

2001 ◽  
Vol 215 (10) ◽  
pp. 1131-1142 ◽  
Author(s):  
M. Y. E. Selim ◽  
A-H B Helali
Keyword(s):  
Diesel Engine ◽  
Thermal Loading

Particulate Filter Design for High Performance Diesel Engine Application

2008 ◽  
Vol 1 (1) ◽  
pp. 1307-1312
Author(s):  
Cheng G. Li ◽  
Hein Koelman ◽  
Ravi Ramanathan ◽  
Ulrich Baretzky ◽  
Gunter Forbriger ◽  
...  
Keyword(s):  
Diesel Engine ◽  
High Performance ◽  
Filter Design ◽  
Particulate Filter

On the Design of Contact Member Surface Shape of Bolted Joints to Minimize Clamping Load Loss

2018 ◽  
Author(s):  
Linbo Zhu ◽  
Yifei Hou ◽  
Abdel-Hakim Bouzid ◽  
Jun Hong
Keyword(s):  
Contact Surface ◽  
High Performance ◽  
Thermal Loading ◽  
Structural Integrity ◽  
Bolted Joints ◽  
Surface Shape ◽  
Geometrical Shape ◽  
Joint Surfaces ◽  
Joint Contact ◽  
The Stability

Metal to metal contact between joint surfaces is widely used in bolted joints to obtain a rigid and a high performance connection. However, a significant amount of clamping load is lost when the joint is subjected to mechanical and thermal loading including creep and fatigue. In practice, to prevent bolt loosening, additional parts such as spring washers, double nut, spring lock washers, Nyloc nut and so on are used. Those methods are costly and influence the stability of the joint and affect its structural integrity. It is well established that a small compression displacement in clamping parts leads to a big clamping load loss in stiff joints. This paper discusses the relationship between connection stiffness and clamping load and presents a method that improves clamping load retention during operation by a careful design of the member contact surface shape. A single bolted joint with two clamping parts is modeled using finite element method (FEM). A method is proposed to obtain a specific stiffness by an optimized geometrical shape of the joint contact surfaces. The result shows that the contact surface shape based on a gradually varying gap can improve the retention of the initial clamping load. Furthermore, a formula of the connection stiffness based on the curve fitting technique is proposed to predict residual clamping load under different external load and loosening.

A numerical and experimental assessment of a coated diesel engine powered by high-performance nano biofuel

2018 ◽  
Vol 171 ◽  
pp. 815-824 ◽  
Author(s):  
B. Dhinesh ◽  
Y. Maria Ambrose Raj ◽  
C. Kalaiselvan ◽  
R. KrishnaMoorthy
Keyword(s):  
Diesel Engine ◽  
High Performance ◽  
Experimental Assessment

Experimental Investigations of Marine Diesel Engine Performance Against Dynamic Back Pressure at Varying Sea-States due to Underwater Exhaust Systems

2019 ◽  
Author(s):  
Harsh D. Sapra ◽  
Jaswinder Singh ◽  
Chris Dijkstra ◽  
Peter De Vos ◽  
Klaas Visser
Keyword(s):  
Diesel Engine ◽  
Thermal Loading ◽  
Geographical Location ◽  
Engine Performance ◽  
Back Pressure ◽  
Experimental Investigations ◽  
Pressure Waves ◽  
Marine Diesel Engine ◽  
Marine Diesel ◽  
Exhaust Systems

Abstract Underwater exhaust systems are employed on board ships to allow zero direct emissions to the atmosphere with the possibility of drag reduction via exhaust gas lubrication. However, underwater expulsion of exhaust gases imparts high and dynamic back pressure, which can fluctuate in amplitude and time period as a ship operates in varying sea-states depending on its geographical location and weather conditions. Therefore, this research aims to experimentally investigate the performance of a marine diesel engine against varying amplitudes and time periods of dynamic back pressure at different sea-states due to underwater exhaust systems. In this study, a turbocharged, marine diesel engine was tested at different loads along the propeller curve against dynamic back pressure waves produced by controlling an electronic butterfly valve placed in the exhaust line after the turbine outlet. Engine performance was investigated against single and multiple back pressure waves of varying amplitudes and wave periods based on real sea-state conditions and wave data. We found that the adverse effects of dynamic back pressure on engine performance were less severe than those found against static back pressure. Governor control and turbocharger dynamics play an important role in keeping the fuel penalty and thermal loading low against dynamic back pressure. Therefore, a marine engine may be able to handle much higher levels of dynamic back pressures when operating with underwater exhaust systems in higher sea-states.

Effects of Diesel / Water Emulsion on Heat Flow and Thermal Loading in a Precombustion Chamber Diesel Engine

2001 ◽  
Author(s):  
M. Y. E. Selim ◽  
S. M. S. Elfeky
Keyword(s):  
Heat Flux ◽  
Diesel Engine ◽  
Cylinder Head ◽  
Thermal Loading ◽  
Great Influence ◽  
Metal Temperature ◽  
Water Emulsion ◽  
Precombustion Chamber ◽  
Flux Measurements ◽  
Oil Fuel

Abstract An experimental investigation has been carried out to study the effects of using water / diesel emulsion fuel in an indirect injection diesel engine on the heat flux crossing liner and cylinder head, thermal loading and metal temperature distribution. A single cylinder precombustion chamber diesel engine has been used in the present work. The engine was instrumented for performance, metal temperature and heat flux measurements. The pure gas oil fuel and different ratios of water / diesel emulsion were used and their effects on the heat flux level and the injector tip temperature are studied. Two correlation were found for the heat flux crossing the liner and the cylinder head at various water / diesel emulsion ratios, fuelling rate and thermocouple probe locations. It was found that the addition of water to diesel fuel, to control the nitrogen oxides emissions, has great influence on reducing die heat flux, the metal temperatures and thermal loading of combustion chamber components.

Weldment Analysis of a Diesel Engine Exhaust Manifold

2016 ◽  
Author(s):  
Masoud Mojtahed ◽  
Nganh Le ◽  
Jerry Wayne DeSoto
Keyword(s):  
Diesel Engine ◽  
Thermal Loading ◽  
Thermal Stresses ◽  
Engine Performance ◽  
Exhaust Manifold ◽  
Element Analysis ◽  
Performance Requirements ◽  
Pipe Model ◽  
Key Factor ◽  
Double Pipe

The Exhaust Manifold is an increasingly important component of industrial turbocharged diesel engines. It can be a key factor to increase the efficiency of any engine, in this case a power plant diesel engine. Analysis of the various structural and thermal loading of the liquid-cooled manifolds is of vital importance to increase the components efficiency and overall engine performance. In this analysis, problems such as thermal stress issues causing manifold failure are identified and redesigned to meet performance requirements and environmental regulations. These manifolds are of complicated shapes and contain many weld joints to attach several integral parts. The weld regions are identified to be sensitive to thermal stresses and most likely prone to failure. The welds were added to the model in ANSYS® Workbench. Computational Fluid Dynamics (Fluent) and Finite Element Analysis (FEA) were used to analyze the welded model. The main outcome was to understand the welds behavior using the ANSYS software and its powerful tools and to determine whether the areas containing welds are likely to fail under the given conditions. A simple double pipe model was also created and congruently analyzed to validate the results and the techniques used in analyzing the manifold model.

High-speed and high performance diesel engine for small aeroplanes

MTZ worldwide ◽  
2003 ◽  
Vol 64 (4) ◽  
pp. 12-15
Author(s):  
Barna Hanula ◽  
Stephan Tafel ◽  
Andreas Mück ◽  
Christian Schlüter
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
High Performance

Predictive Combustion and Emissions Simulations for a High Performance Diesel Engine Using a Detailed Fuel Combustion Model

2014 ◽  
Author(s):  
Karthik Puduppakkam ◽  
Chitralkumar Naik ◽  
Ellen Meeks ◽  
Christian Krenn ◽  
Roswitha Kroiss ◽  
...  
Keyword(s):  
Diesel Engine ◽  
High Performance ◽  
Fuel Combustion ◽  
Combustion Model

New Deutz High Performance Diesel Engine

1981 ◽  
Author(s):  
Paul J. Slezak ◽  
Wilhelm Vossmeyer
Keyword(s):  
Diesel Engine ◽  
High Performance
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