Improving 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

“…To create the ICE and vehicle heating system, a combination of phase-transitional thermal accumulators was used (combination by function). Thermal accumulator is a device for accumulating thermal energy based on physical or chemical process associated with heat absorption and release [1][2][3][4][5][6][7][8][9][10][11]. The main processes are: accumulation-release of internal energy when heating-cooling solids or liquids, phase transitions with absorption-release of latent heat, the process of sorption-desorption or a reverse chemical reaction occurring with heat releaseabsorption.…”

“…Accumulation of thermal energy or heat accumulation is a process of accumulating thermal energy, when its supply is maximum, for later use when the need arises. The process of accumulating energy is called charging, the process of its use is called discharging [1][2][3][4][5]. Substances used to accumulate thermal energy are called heat accumulating materials.…”

“…In [1,2], the main stages of creating the combined heating system (CHS) of the vehicular engine and the vehicle are shown. To ensure the required temperature condition during pre-start and 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 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][2][3][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 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 each other performing their inherent functions [1,5]. 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.…”