Abstract: Constant technical progress in the production of construction materials, fuels, and oils, as well as in mechanical engineering technology, contributes to the continuous improvement of internal combustion engines. This development aims to reduce the toxicity of exhaust emissions, limit fuel consumption, increase power output per cubic decimeter of engine displacement, while simultaneously reducing weight, ensuring operational reliability under various operating conditions, and increasing durability. Currently, a significant issue is the reduction of toxic compound emissions in exhaust gases, which pose a serious threat to the natural environment and human health. One of the ways to reduce the emission of harmful exhaust compounds is the use of engine supercharging.The article presents the results of comparative studies on the emission of harmful exhaust compounds from spark-ignition engines of the same design—naturally aspirated and supercharged—conducted under real-world vehicle operating conditions.
1. INTRODUCTION
Until recently, supercharging in spark-ignition engines was used very rarely. Generally, these were engines intended for powering sports vehicles, where the essence was to obtain the highest possible performance parameters. These engines were characterized by a short service life, and the issue of toxic compound emissions contained in the exhaust gases was not considered. The current development of internal combustion engines is being carried out with the idea of downsizing, which consists of reducing the displacement of the internal combustion engine while maintaining high performance parameters, i.e., torque and power. This action aims to achieve higher overall engine efficiency and, consequently, reduce fuel consumption.
The adopted directions for the development of internal combustion engines are implemented, among other things, through the use of supercharging systems. The possibilities of using supercharging systems in spark-ignition engines, and in particular those using a turbocharger, are closely related to the technological and material level of the production of these devices. (…)
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Source: Logistyka Magazine