Author: A. S. GhumanPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Turbocharged Diesel Engine Simulation to Predict Steady-state and Transient Performance
Diesel Engine Transient Operation
Author: Constantine D. RakopoulosPublisher: Springer Science & Business Media
ISBN: 1848823754
Category : Technology & Engineering
Languages : en
Pages : 408
Book Description
Traditionally, the study of internal combustion engines operation has focused on the steady-state performance. However, the daily driving schedule of automotive and truck engines is inherently related to unsteady conditions. In fact, only a very small portion of a vehicle’s operating pattern is true steady-state, e. g. , when cruising on a motorway. Moreover, the most critical conditions encountered by industrial or marine engines are met during transients too. Unfortunately, the transient operation of turbocharged diesel engines has been associated with slow acceleration rate, hence poor driveability, and overshoot in particulate, gaseous and noise emissions. Despite the relatively large number of published papers, this very important subject has been treated in the past scarcely and only segmentally as regards reference books. Merely two chapters, one in the book Turbocharging the Internal Combustion Engine by N. Watson and M. S. Janota (McMillan Press, 1982) and another one written by D. E. Winterbone in the book The Thermodynamics and Gas Dynamics of Internal Combustion Engines, Vol. II edited by J. H. Horlock and D. E. Winterbone (Clarendon Press, 1986) are dedicated to transient operation. Both books, now out of print, were published a long time ago. Then, it seems reasonable to try to expand on these pioneering works, taking into account the recent technological advances and particularly the global concern about environmental pollution, which has intensified the research on transient (diesel) engine operation, typically through the Transient Cycles certification of new vehicles.
Simulation of a Turbocharged Diesel Engine to Predict the Transient Response
Author: M. R. GoyalTransient Performance Simulation and Analysis of Turbocharged Diesel Engines
Author: N. WatsonPublisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 19
Book Description
Transient Cycle Simulation Program of a Research Diesel Engine
Author: Donald Earl CookASME Technical Papers
Author: Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 540
Book Description
Paper
Author: Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 362
Book Description
Dynamic Performance Studies of a Turbocharged Diesel Engine
Author: Sikander S. ShamsiPublisher:
ISBN:
Category : Diesel motor
Languages : en
Pages : 0
Book Description
Dynamic performance of turbocharged diesel engines is of considerable importance in some applications such as marine propulsion and electric power generation. Under step-load applications turbocharged engines either recover solely or stall depending on the step size and engine speed. This paper describes the experimental and analytical studies of the dynamic behavior of a turbocharged diesel engine. Specially constructed, computer-controlled engine testbed has been described and transient test results for 100 per cent step-load application presented. A mathematical model based on the quasi-steady state assumption has been described in detail and a digital computer simulation based on this mathematical model briefly discussed. The mathematical model takes into consideration the thermal capacity affect on the exhaust gas temperature, a pulse factor based on the authors idea of mean affective turbine expansion ratio to evaluate turbocharger performance under pulsating flow conditions, extra-steady-state losses during a transient condition and re-direction of smoke. Good agreement between the predicted and the test-bed results was achieved. Illustrations describe the text-bed, dynamometer, printed circuit electromechanical governor and predicted and test-bed transient results.
Review of Thermodynamic Diesel Engine Simulations Under Transient Operating Conditions
Author: Constantine D. RakopoulosPublisher:
ISBN: 9780768016369
Category : Automobiles
Languages : en
Pages : 40
Book Description
Study and modeling of transient operation is an important scientific objective. This is due to the fact that the majority of daily vehicle driving conditions involve transient operation, with non-linear situations experienced during engine transients. Thus, proper interconnection is needed between engine, governor, fuel pump, turbocharger and load. This paper surveys the publications available in the open literature concerning diesel engine simulations under transient operating conditions. Only those models that include both full engine thermodynamic calculations and dynamic powertrain modeling are taken into account, excluding those that focus on control design and optimization. Most of the attention is concentrated to the simulations that follow the filling and emptying modeling approach. A historical overview is given covering, in more detail, research groups with continuous and consistent study of transient operation. One of the main purposes of this paper is to summarize basic equations and modeling aspects concerning in-cylinder calculations, friction, turbocharger, engine dynamics, governor, fuel pump operation, and exhaust emissions during transients. The various limitations of the models are discussed together with the main aspects of transient operation (e.g. turbocharger lag, combustion and friction deterioration), which diversify it from the steady-state. Some of the most important findings in the field during the last 30 years are presented and discussed. The survey extends to special cases of transient diesel engine simulation, such as second-law analysis, response when the turbocharger compressor experiences surge, and whole vehicle performance. Several methods of improving transient response are also mentioned, based on the various simulations. An easy-to-read tabulation of all research groups dealing with the subject, that includes details about each model developed and engines/parameters studied, is also provided at the end of the paper.-- SAE website.
11th International Conference on Turbochargers and Turbocharging
Author: IMechEPublisher: Elsevier
ISBN: 0081000340
Category : Technology & Engineering
Languages : en
Pages : 497
Book Description
The future market forces and environmental considerations in the passenger car and commercial vehicle sector mean more stringent engine downsizing is far more prevalent. Therefore, novel systems are required to provide boosting solutions including hybrid, electric-motor and exhaust waste energy recovery systems for high efficiency, response, reliability, durability and compactness. The current emission legislations and environmental trends for reducing CO2 and fuel consumption are the major market forces in the land and marine transport industries. The internal combustion engine is the key product and downsizing, efficiency and economy are the driving forces for development for both spark ignition (SI) and compression ignition (CI) engines in both markets. Future market forces and environmental considerations for transportation, specifically in the passenger car, commercial vehicle and the marine sectors mean more stringent engine downsizing. This international conference is the latest in the highly successful and prestigious series held regularly since 1978. These proceedings from the Institution's highly successful and prestigious series address current and novel aspects of turbocharging systems design, boosting solutions for engine downsizing and improvements in efficiency, and present the latest research and development in this growing and innovative area. - Focuses on boosting solutions including hybrid, electric-motor and exhaust waste energy recovery systems - Explores the current need for high efficiency, reliability, durability and compactness in recovery systems - Examines what new systems developments are underway