Author details

#### Andrei Melekhin

Address all correspondence to: melehin2006@yandex.ru

Moscow State University of Civil Engineering (National Research University), Moscow, Russia

#### References


[4] Khrustalev BM, Nesenchuk AP, et al. Heat and Mass Transfer. Part 1. Minsk: Belarusian National Technical University; 2007

As applied problems of improvement of engineering systems of buildings considered an

Finding the best managed of the parameters of the heat exchanger element air heating system of a building is possible with the developed by the author of a comprehensive method of research based on multi-criteria parameter optimization with the introduction of empirically obtained data. When developing a mathematical model of the heat exchanger element air heating system of a

The decision of tasks of optimization carried out using the method of nonlinear optimization in

The aim of the study is to increase the efficiency of engineering systems of buildings by optimizing the parameters of the elements of heat exchangers used in air heating systems of buildings.

• developed a mathematical model of multicriteria optimization problems of the process of

• the regularities of process of heat exchange with the receipt of the generalized dependency of the temperature distribution on the heat-transfer surface of heat exchanger air heating systems of the buildings at work during the heating period using the developed mathe-

Moscow State University of Civil Engineering (National Research University), Moscow, Russia

[1] Bejan A. Convection Heat Transfer. 4th ed. New York, NY, USA: John Wiley & Sons; 2013

[2] Liu S, Saker M. A comprehensive review on passive heat transfer enhancements in pipe

[3] Hasan MI, Rageb AMA, Yaghoubi M. Investigation of a counter flow microchannel heat exchanger performance with using nanofluid as a coolant. Journal of Electronics Cooling

exchangers. Renewable and Sustainable Energy Reviews. 2013;19:64-81

• a comparison of the obtained results with the known theoretical dependencies;

example of optimization of heat exchanger element air heating system of the building.

building used for the basic equations of heat and mass transfer.

To achieve this goal the author posed and solved the following tasks:

heat transfer on finned heat transfer surfaces of the apparatus;

• reduced metal heat exchanger optimized thermal performance.

Address all correspondence to: melehin2006@yandex.ru

and Thermal Control. 2012;2(2):35-43; 2013;58:68-76

design-software complexes IOZO.

98 HVAC System

matical model;

Author details

Andrei Melekhin

References


**Chapter 7**

**Provisional chapter**

**Improving the Vehicular Engine Pre-Start and After-**

**Improving the Vehicular Engine Pre-Start and After-**

Igor Gritsuk, Vasyl Mateichyk, Miroslaw Smieszek,

Igor Gritsuk, Vasyl Mateichyk, Miroslaw Smieszek,

Valery Aleksandrov, Roman Symonenko and

Valery Aleksandrov, Roman Symonenko and

Additional information is available at the end of the chapter

Additional information is available at the end of the chapter

Vladimir Volkov, Yurii Gutarevych,

Vladimir Volkov, Yurii Gutarevych,

http://dx.doi.org/10.5772/intechopen.79467

tions and the category of the vehicle.

Valeriy Verbovskiy

**Abstract**

**1. Introduction**

Valeriy Verbovskiy

**Start Heating by Using the Combined Heating System**

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 condi-

**Keywords:** vehicular engine, phase-transitional thermal accumulator, thermal

One of the promising ways to improve engine cooling systems is the introduction of modern technology into their design in order to increase efficiency and adapt to operating conditions, etc. These measures include a variety of methods of analysis, design, experimental studies,

development system, heating processes, mathematical model

**Start Heating by Using the Combined Heating System**

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use,

distribution, and reproduction in any medium, provided the original work is properly cited.

DOI: 10.5772/intechopen.79467

#### **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**

DOI: 10.5772/intechopen.79467

Igor Gritsuk, Vasyl Mateichyk, Miroslaw Smieszek, Vladimir Volkov, Yurii Gutarevych, Valery Aleksandrov, Roman Symonenko and Valeriy Verbovskiy Igor Gritsuk, Vasyl Mateichyk, Miroslaw Smieszek, Vladimir Volkov, Yurii Gutarevych, Valery Aleksandrov, Roman Symonenko and Valeriy Verbovskiy

Additional information is available at the end of the chapter Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/intechopen.79467

#### **Abstract**

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.

**Keywords:** vehicular engine, phase-transitional thermal accumulator, thermal development system, heating processes, mathematical model

#### **1. Introduction**

One of the promising ways to improve engine cooling systems is the introduction of modern technology into their design in order to increase efficiency and adapt to operating conditions, etc. These measures include a variety of methods of analysis, design, experimental studies,

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

both at the system level and at the component level. These suggested methods are particularly relevant to those modes of vehicular engines that require significant efforts for their thermal development under cold operating conditions. They are as follows: pre-start and after-start heating of the engine, keeping the engine heated for a successful start under cold operating conditions. Apart from ease of use, the decisive factors are low cost of devices for engine thermal development, state legislation and standards, the need for full power immediately after the engine starts, improved fuel economy and reduced emissions during pre-start and after-start thermal development. The limiting factors are weight and size characteristics of the devices and their compact installation space according to modern vehicle design. In this regard, the most relevant is the development of complex systems for solving these problems in both the design of the engine and the vehicle. In this case one of the promising ways is the development and the study of the combined heating system with phase-transitional thermal accumulator (TA) to carry out pre-start and after-start heating of the engine under cold operating conditions.

after-start heating of the internal combustion engine (ICE) and the vehicle under cold operating conditions, a scheme and components of the CHS are formed on the basis of vehicular engine main systems. The suggested CHS consists of the following subsystems: rapid heating of the engine (RHE), the utilization of thermal energy of exhaust gases (EG) by phase-transitional TA (UTETA), contact thermal accumulator (CTA), thermal accumulator for storing motor oil (TASMO), thermal accumulator for storing a coolant (TASC), TA of EG cleaning system (TAEGCS). The CHS itself is a part of a cooling system (CS), lubrication system (LS) and exhaust system of the vehicular engine. It performs some functions of the systems and has a significant influence on the operation of the vehicular engine [1–4]. It is the CHS that provides pre-start and rapid after-start heating of a coolant and motor oil, exhaust gases cleaning system (EGCS) of the engine to the temperature at which the engine can be loaded and then to an operating temperature. The operating temperature is maintained for a long time within specified limits. The elements of the combined heating system, such as the subsystems of rapid heating of the engine, the utilization of thermal energy of exhaust gases by phase-transitional TA, contact thermal accumulator and thermal accumulator for storing a coolant are the components of the engine cooling system. TA of EG cleaning system is a component of the engine exhaust system. The elements of the combined heating system, such as the subsystems of rapid heating of the engine, the utilization of thermal energy of exhaust gases by phase-transitional TA, contact thermal accumulator and thermal accumulator for storing motor oil are the components of the engine lubrication system. All the above-mentioned subsystems can work together within and according to the algorithm of the combined heating system operation or separately from

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

http://dx.doi.org/10.5772/intechopen.79467

103

The combined heating system generally works on the principle of thermal energy of EG accumulation by phase-transitional thermal accumulator of the utilization of thermal energy of EG subsystem. It also implies the accumulation of engine thermal energy by contact thermal accumulator in the form of convection and thermal radiation of the vehicular engine during its operation. The "free" thermal energy generated during the fuel combustion is emitted into

**Figure 1** shows the implementation of the combined heating system for the vehicular engine. EG thermal energy accumulation of the vehicular engine 1 by phase-transitional thermal accumulator, namely by the subsystem of the utilization of thermal energy of exhaust gases 20, is made possible by parallel installing the engine silencer 18 in the EG heat exchanger (HE) 6. The circulation of a heat carrier between TA 20 and exhaust gases heat exchanger 6 is provided by a modulating pump 21. The heat carrier passing through HE 6 in the exhaust manifold is heated by thermal energy of EG to a temperature of 150–190°C (a process fluid with a boiling point of 220°C was used as the heat carrier). Heat exchanger 6 is installed in a bypass, in parallel with the main EG manifold of the vehicular engine. Such a decision was made in order to ensure the disconnection of the heat exchanger 6 after phase-transitional TA 20 of the subsystem of the utilization of thermal energy is fully charged. The switching of EG flow is carried out by electromagnetic gas valves 30 and 25 with an electric drive based on control system commands. The EG flow adjustment is carried out following a special algorithm [4, 9, 10] according to a developed cycle of heating the engine. From the heat exchanger 6 the heat carrier delivers the heat into phase-transitional TA 20 of the subsystem of the utilization of thermal energy. In an

each other performing their inherent functions [1, 5].

the atmosphere and is not used usefully.
