Reducing Harmful Emissions of the Vehicular Engine by Rapid After-Start Heating of the Catalytic Converter Using Thermal Accumulator

Грицук, Ігор; Mateichyk, Vasyl; Tsiuman, Mykola; Gutarevych, Yurii; Śmieszek, M.; Goridko, Nataliia

doi:10.4271/2018-01-0784

Cited by 26 publications

(12 citation statements)

References 5 publications

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“…These modes are: (1) heating in an idling mode; (2) heating in an idling mode with electrical consumers switched on; (3) heating in an idling mode with gradual heating in motion; (4) heating in motion. The study of the vehicle heating according to the above-mentioned modes is detailed in [1,[16][17][18][19].…”

Section: The Study Results Of the Influence Of The Combined Heating Smentioning

confidence: 99%

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Improving the Vehicular Engine Pre-Start and After-Start Heating by Using the Combined Heating System

Грицук¹,

Mateichyk²,

Śmieszek³

et al. 2018

HVAC System

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The chapter focuses on the use of the combined thermal development system with phasetransitional thermal accumulators. The peculiarity of the combined system is that it uses thermal energy of exhaust gas, coolant and motor oil for rapid pre-start and after-start heating of the vehicular engine. The structure of the combined thermal development system and a mathematical model have been developed to study the impact of the system parameters on the heating processes of the engine. The results of experimental and estimation studies of thermal accumulator materials and the combined heating system of the vehicular engine are shown. For a truck engine 8FS 9.2/8, it is shown that the use of the combined system reduces the time of coolant and motor oil thermal development by 22.9-57.5% and 25-57% accordingly compared with the use of a standard system. The peculiarities of forming and using the system depend on operational and climatic conditions and the category of the vehicle.

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Section: The Study Results Of the Influence Of The Combined Heating Smentioning

confidence: 99%

“…The authors developed a mathematical model [1,5,10,[11][12][13] for the estimation studies (Figure 3). It is based on a systems approach used in the processes of the vehicular thermal development when using phase-transitional thermal accumulators [1,[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Objects Of Experimental Studiesmentioning

confidence: 99%

Improving the Vehicular Engine Pre-Start and After-Start Heating by Using the Combined Heating System

Грицук¹,

Mateichyk²,

Śmieszek³

et al. 2018

HVAC System

Self Cite

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show abstract

“…The comparison has been made for a six-cylinder engine with a distributed gasoline injection system and feedback [35,39]. The dependency of the indicated efficiency on the average effective pressure, which is proportional to the external load, has been determined taking into account the nature of the combustion, the duration of the combustion phases, and the effect of residual gas [10,34,40].…”

Section: Theoretical Substantiation Of Possible Improvement Of Fuel Ementioning

confidence: 99%

“…It can, therefore, be installed on vehicles in operation. This system of power regulation has five patents in the Ukraine for utility models [35].…”

Section: Working Out the Fuel Supply Systemmentioning

confidence: 99%

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Improving Fuel Economy of Spark Ignition Engines Applying the Combined Method of Power Regulation

et al. 2020

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One of the disadvantages of spark ignition engines, whose power is regulated by throttling, is the increased fuel consumption at low loads and when the engine is idle. The combined method of engine power regulation by switching off the cylinder group and throttling working cylinders is one of the effective ways to improve fuel economy in the above-mentioned modes. This article presents the research results of the combined method of engine power regulation which can be realized by minor structural changes in operating conditions. The method implies the following: at low loads and at idle speed of the engine. Fuel supply to the group of cylinders is switched off with the simultaneous increase of the cyclic fuel supply in the working cylinders. The adequacy of the calculated results has been checked by the indication of operating processes in switched off and working cylinders. The research results of a six-cylinder spark ignition engine with the distributed gasoline injection using the combined power regulation system have been shown. The angles of opening the throttle which provides a non-shock transition from the operation with all cylinders to the operation with the cylinder group switched off have been determined.Energies 2020, 13, 1076 2 of 19 forced idling. In this case, most of the time cars move at a low speed, with the engine running at low loads and at idle speed.Operating modes of automobile engines under operating conditions have been investigated in many papers. At low speed and low load, high heat transfer and combustion losses occur, directly affecting engine operating conditions [1]. In most cases, these actual engine operating conditions are not reflected in standardized driving cycles and, sometimes, summaries of experimentally-derived cycles are also used to evaluate traffic jams [2]. Design changes, such as ceramic-coated engines, have also been used to reduce heat loss, which, when used in combination with biodiesel as fuel, have shown optimum engine operating conditions [3]. This effect is also noticeable when using triglyceride-based biodiesel as fuel [4]. Hydroxyl gas can also be used as an indicator to improve engine natural conditions, resulting in higher thermal efficiency and improved exhaust emissions [5]. The possible use of biobutanol as another source of biofuels and similar trends in engine operating conditions due to its higher oxidative stability [6] as a spark ignition [7], as a compression ignition engines [8]. It is also known that the use of alcohol additives in petrol improves its properties and achieves an ecological effect [9]. The EGR system shows a different reduction in cycle pressure [10] which is noticeable when operating small engines [11]. Studies [12][13][14][15] shows that the basic operating modes of both freight and passenger vehicles moving in cities are part speed and loading modes. They involve acceleration, steady mode, and active and forced idling while driving and braking the car. Most of the time the vehicular engines run the open throttle or with a fuel s...

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The Information and Analytical System for Monitoring Roadside Pollution by Traffic Flows

Mateichyk

Tsuman

Weigang

et al. 2020

ICTE in Transportation and Logistics 2019

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Reducing Harmful Emissions of the Vehicular Engine by Rapid After-Start Heating of the Catalytic Converter Using Thermal Accumulator

Cited by 26 publications

References 5 publications

Improving the Vehicular Engine Pre-Start and After-Start Heating by Using the Combined Heating System

Improving the Vehicular Engine Pre-Start and After-Start Heating by Using the Combined Heating System

Improving Fuel Economy of Spark Ignition Engines Applying the Combined Method of Power Regulation

The Information and Analytical System for Monitoring Roadside Pollution by Traffic Flows

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