scholarly journals Integration of kinematic and dynamic mathematical models of a two-axle electric car in the problem of estimating its stability on turns

ScienceRise ◽  
2021 ◽  
pp. 23-29
Author(s):  
Vadym Horeniuk
Keyword(s):  
Mathematical Models ◽  
Control Systems ◽  
Electric Drive ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
The Road ◽  
On The Road ◽  
The Stability ◽  
Technological Product

Object of research: the process of movement of cars with internal combustion engines or the electric drive on a road curve. Investigation problem: assessment of the stability of cars with internal combustion engines or electric drive on a road curve and determination of conditions of its ensuring. The main scientific result. The article evaluated the stability of cars with internal combustion engines or electric drive on a road curve and determines the conditions of its ensuring using an algorithm that combines mathematical models of car movement on a road curve, synthesized based on balance equations of both kinematics and dynamics. The proposed models consider the change in speed of cars while driving on a road curve, and therefore belong to the class of differential equations. The analysis of these models allows calculating changes in time of values of limiting and critical speeds of movement of the car on a road curve. The article identifies the prospects of integration into this set of mathematical models another one, synthesized in the space of linguistic variables that characterize the uncertainty of the road surface and the degree of tire wear on different wheels of the car. The area of practical application of the research results: Automotive enterprises specializing in equipping cars with traffic control systems. Innovative technological product: A method of determining the limiting parameters of movement of the car on road curves, at which the car does not overturn while passing turns, and an algorithm for its implementation, which combines kinematic and dynamic mathematical models of car movement on the road curve. Scope of application of the innovative technological product: Equipping cars with additional control systems that assess the critical values of the traffic parameters on turns to ensure the conditions of non-overturning when the car passes these turns

Aerosol pollution from internal combustion engines

1968 ◽  
Vol 307 (1489) ◽  
pp. 183-194 ◽  
Keyword(s):  
United Kingdom ◽  
Internal Combustion Engines ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Internal Combustion ◽  
Motor Vehicles ◽  
Combustion Engines ◽  
The Road ◽  
The United Kingdom ◽  
On The Road

Aerosols have one property that distinguishes them sharply from most other pollutants of the atmosphere. They are easily seen and recognized as pollutants. The first smoke abatement law in the United Kingdom was adopted by proclamation in 1306 during the reign of Edward I, and in 1307 a violator of the prohibition was condemned and executed (Rogers & Edelman 1962). Even from the early days of internal combustion engines the emission of smoke, ‘vapour’ and oily substances has been prohibited. The Motor Vehicles (Construction and Use) Regulations 1966 presently govern emissions from motor vehicles in the United Kingdom. (These regulations are given authority by the Road Traffic Act 1930). For example, appropriate parts of the regulations stipulate, first in relation to construction, that every motor vehicle must be so constructed that it does not emit any avoidable ‘smoke or visible vapour’; and secondly in relation to use, that no vehicle may be used on the road if it emits any ‘smoke, visible vapours, grit, sparks, ashes, cinders or oily substances’ if the emission causes or is likely to cause ‘damage to any property or injury to any person’ actually on, or expected to be on, the road, or is likely to cause danger to any such person.

scholarly journals DEVELOPMENT OF PROMISING SYNTHESIS - TECHNOLOGY AVENIR GAZ CONVERTING DIESELS TO GAS ENGINES WITH SPECIAL IGNITION

ScienceRise ◽  
2020 ◽  
pp. 3-9
Author(s):  
Serhii Kovalov
Keyword(s):  
Control Systems ◽  
Diesel Engines ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Injection System ◽  
Intake Manifold ◽  
Maximum Speed ◽  
Combustion Engines ◽  
Microprocessor Control ◽  
Technological Product

The object of research is the multifunctional synthesis technology Avenir Gaz (of various levels of complexity), intended for converting transport diesel engines into spark-ignited gas internal combustion engines (ICE) for operation on liquefied petroleum gas (LPG). Investigated problem: the creation of an affordable synthesis technology in terms of complexity and price, which allows converting operating diesel engines into gas internal combustion engines operating on cheaper and environmentally friendly gas fuel - LPG. Main scientific results: Avenir Gaz synthesis technology (two levels of complexity, qualified as levels "A" and "B") for converting diesel engines into gas internal combustion engines is developed and created. It is shown that the conversion of diesel engines according to the Avenir Gaz synthesis technology is carried out on the basis of the developed electronic microprocessor control systems. And the basis of the control systems is the developed and manufactured two electronic microprocessor control units Avenir Gaz 37 (hereinafter – ECU Avenir Gaz 37). ECUs in accordance with the levels of complexity of synthesis technology are qualified as – ECUs Avenir Gaz 37 "A" and Avenir Gaz 37 "B". It is shown that Avenir Gaz synthesis technology of level "A" allows converting diesel engines into gas internal combustion engines with LPG supply through a gas-air mixer into the inlet pipeline. At the same time, the Avenir Gaz 37 "A" ECU, using the signal from the Hall sensor of the distributor, limits the maximum speed of the gas engine, thereby ensuring its safe operation. And the synthesis technology Avenir Gaz 37 of level "B" allows converting diesel engines into gas internal combustion engines providing group or sequential injection of LPG by electromagnetic gas nozzles (injection system of the Common Rail type) into the intake manifold in the area close to the intake valve. Area of practical use of the research results: converting diesel vehicles, including agricultural machinery (powerful wheeled and tracked tractors, combines, etc.) into spark-ignited gas combustion engines operating on LPG. An innovative technological product: Avenir Gaz synthesis technology, which allows converting the transport diesel engines in operation into gas internal combustion engines for operation on LPG. Scope of application of the innovative technological product: naturally aspirated and supercharged diesel engines with the number of cylinders from one to six, in-line and V-shaped, with a uniform alternation of working strokes.

scholarly journals Innovative research method of the fuel injector that allows to evaluate the efficiency of wood chip drive control systems

2019 ◽  
Vol 254 ◽  
pp. 01010 ◽  
Author(s):  
Łukasz Wargula ◽  
Piotr Krawiec ◽  
Konrad Jan Waluś
Keyword(s):  
Control Systems ◽  
Green Infrastructure ◽  
Research Method ◽  
Internal Combustion Engines ◽  
Wood Chip ◽  
Internal Combustion ◽  
Injection System ◽  
Combustion Engines ◽  
Fuel Injector ◽  
Innovative Research

Exceeding air pollution emission standards in large cities leads to a search of methods of reducing emissions and their neutralization. One of the ways to improve air quality is to increase green infrastructure in urban areas. It leads to an increase in the demand for work machines that process waste from tree care is. Mobile chopping shredders for tree branches are driven by internal combustion engines defined in the standard as drives of non-road mobile machines. In the case of spark-ignition internal combustion engines, these provisions are liberal. This leads to a low level of technical advancement of these drives characterized mainly by the carburettor fuel supply system. The article presents an innovative research method of the fuel injector of the injection unit, enabling mechatronisation of the combustion engine's injection system. The measured values make it possible to evaluate the fuel consumption depending on the developed (patent pending) innovative control systems for the chipper drive. Ultimately, the conducted research will enable the increase of the effectiveness of wood chipping grinding processes and reduction of harmful emissions.

Development of Advanced Silicon Nitride Valves for Combustion Engines and Some Practical Experience on the Road

1992 ◽  
Vol 287 ◽  
Author(s):  
Rainer Hamminger ◽  
Juergen Heinrich
Keyword(s):  
Silicon Nitride ◽  
Internal Combustion Engines ◽  
Bending Strength ◽  
Processing Parameters ◽  
Practical Experience ◽  
Combustion Engines ◽  
The Road ◽  
On The Road ◽  
Exhaust Valves ◽  
Fuel Consumption And Emissions

ABSTRACTOne major goal of automotive engineers actually is to reduce fuel consumption and emissions of present internal combustion engines. First promissing results have been achieved by the substitution of conventional by silicon nitride valves. The weight reduction of about 60 % per valve is corresponding with lower inertia and spring forces, which lead to improved emissions, reduced fuel consumptions as well as high performances of the engines. Applying statistical methods, two advanced silicon nitride materials have been developed, concerning their application as “cool” inlet valves and “hot” exhaust valves, respectively. Using high quality powders and combined optimum processing parameters, 4-point-bending strength of more than 1200 MPa (room temperature) and 870 MPa (1000 °C), resp., have been realized. Weibull moduli of more than 30 have been reproduced. Grinding of valves produced from these materials has economically been demonstrated by drastically reducing the machining times. Some results of road tests as well as of simulated engine tests from cooperations with different automotive companies are presented in detail.

scholarly journals The operating parameters of internal combustion engines in the road test

2011 ◽  
Vol 146 (3) ◽  
pp. 45-52
Author(s):  
Jarosław MAMALA ◽  
Sebastian BROL ◽  
Jerzy JANTOS
Keyword(s):  
Internal Combustion Engines ◽  
Engine Speed ◽  
Internal Combustion ◽  
Operating Conditions ◽  
Combustion Engines ◽  
Road Test ◽  
Test Drive ◽  
The Road ◽  
Stationary Conditions ◽  
Speed Characteristic

A characteristic feature of internal combustion engines of a vehicle used in real operating conditions are frequent changes of the values of power in the powertrain. The analysis of the results of the road test through a measurement of parameters of engine (CAN BUS) in a passenger car proves, that the changes of parameters and engine power are frequent. Particularly under the conditions of urban test-drive their frequency, range and dynamics is significant. As a result the engine speed, throttle opening and fuel consumption are not constant, as in the case of measurements realized under stationary conditions on an engine test stand, while determining of the engine speed characteristic. The paper presents the analysis of the engine parameters determined based on on-road tests rather than laboratory tests.

scholarly journals Overview of modern control systems for internal combustion engines

2021 ◽  
pp. 42-52
Author(s):  
Alexey V. Soloviev ◽  
Evgeniy N. Poselenov
Keyword(s):  
Control Systems ◽  
High Speed ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Operational Characteristics ◽  
Global Companies ◽  
Entire Complex ◽  
Technical Solutions ◽  
Marine Medium

The article provides an overview of modern microprocessor control systems for internal combustion engines, which allow improving the entire complex of design, technological, environmental and operational characteristics of engines due to the wide possibilities of regulating the working process in each cycle of each cylinder. The directions of research and development on the creation of adaptive engines are considered. It is indicated that the main distinguishing feature of engines with a variable workflow of any design scheme is that these adaptability properties are achieved by increasing the number of controlled elements in comparison with existing engines. The article provides an overview of the controlled elements implemented in internal combustion transport engines and discusses the technical solutions that are used by well-known global companies in the field of marine medium-and high-speed engines. The directions in the field of improving computers that control engines are described.

scholarly journals The development of electromobility - in the aspect of the operation of cars with electric drive

2018 ◽  
Vol 19 (12) ◽  
pp. 126-128
Author(s):  
Zbigniew Łosiewicz ◽  
Ewelina Sendek-Matysiak
Keyword(s):  
Electric Drive ◽  
Internal Combustion Engines ◽  
Transition Period ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Battery Charging ◽  
Electric Cars ◽  
Electric Drives ◽  
Charging Station

The article discusses problems related to the operation of electric cars. Currently, there is a transition period between the use of internal combustion engines and purely electric drives. The biggest problem is the storage of electricity and access to the battery charging station.

Sign in / Sign up

Export Citation Format

Share Document