Neues Common-Rail-Einspritzsystem mit Piezo-Aktorik für Pkw-Dieselmotoren

Egger, K.; Warga, Johann; Klügl, Wendelin

doi:10.1007/bf03226642

Cited by 14 publications

(2 citation statements)

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“…Common rail accumulator systems in recent times are widely used in marine low-speed diesel engines. The range of engines that can be equipped with accumulator systems is quite wide: from diesel engines for agricultural machinery to locomotive and ship installations [1,2].…”

Section: Introductionmentioning

confidence: 99%

Development and analysis of the loading characteristic of accumulate fuel injection system Common Rail of the engine 50 RT-flex

Polovinka,

Tabulinsky

2023

TAPR

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The object of research are hydrodynamical processes in fuel delivery system of marine diesel engine of type RT-flex with accumulate fuel injection system of type Common Rail. The problem, being solved, is maintenance of an effective operation of the specified diesel engines due to perfection work of their fuel equipment. The results of simulation modeling of the injection process by accumulator fuel delivery system Common Rail of the 50RT-flex engine are presented. On the basis of the functional diagram of system, a calculation model has been compiled that provides a description of the operation of the systems main blocks. The load characteristic of the fuel equipment is built in the traditional version – the dependence of the fuel delivery parameters from the engine load at a constant speed. For the system under consideration, the control element is the valve assembly connecting the injection control unit (ICU) with injectors. The parameters of the load characteristic in this study are modes with a constant engine speed n=124 rpm and a change in the opening angle of the control valve in the range – jv=6.6–14.4 °CA. The parameters of the devices that largely determine the characteristics of the fuel delivery and the quality of the working processes of a diesel engine are considered in more details. Such an element of the system is ICU, the working body of which is the dosing piston. The main parameters of its operation when delivering fuel are the magnitude and speed of the stroke. For the load characteristics in the accepted range of the valve control valve opening angle jv from 6.6 to 14.4 °CA (2.18 times), the piston stroke was hp=4.29–8.61 mm (2.0 more). In this case, the dependence of hp on jv is linear. Area of use of the data received during research, ship crews and the shore services providing operation of vessels are. A material is applied in process of high school and is already used in various educational forms. The given researches are useful to developers and builders of marine diesel engines of a considered class.

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Section: Introductionmentioning

confidence: 99%

Development and analysis of the loading characteristic of accumulate fuel injection system Common Rail of the engine 50 RT-flex

Polovinka,

Tabulinsky

2023

TAPR

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“…To realize this a high dynamic actuation (approximately 1 kHz) with a high degree of precision has to be performed. Since standard drives do not provide sufficient dynamics, a piezoelectric actuator is used to control the position of the cutting edge [2].…”

Section: Introductionmentioning

confidence: 99%

Design of a contactless rotary energy transmission for an industrial application

Hirschmann

Dick

Richter

et al. 2008

2008 IEEE Power Electronics Specialists Conference

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Till now, the common practice of transferring energy from a stationary to a rotating plane is realized via slip rings. These systems exhibit a small mechanical size but limit the achievable rotational speed. Due to abrasion, the lifetime of slip rings is limited. Contactless rotary energy transmissions can overcome these problems. They are not affected by fouling and are theoretically maintenance-free. This paper deals with the development of a contactless energy transmission for a drilling tool. The developed energy transmission transfers up to 200 W. The transferred energy is used to drive a piezoelectric actuator, which in turn controls the position of the cutting edge of the drilling tool. First, the mechanical constraints of this application are given and the consequences for the energy transmission are derived. Afterwards, the topology most suitable for this application is selected. Subsequently, the different methods to solve the difficulties, which arise from the mechanical constraints, with their advantages and disadvantages are compared and their influence on the design of the components is shown. At the same time, it is determined which degree of mechanical dislocation is allowed before the system will trip.

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