Bagas Tegar Bhadravyata

Introduction

Assalamualaikum Wr Wb. My name is Bagas Tegar Bhadravyata, currently taking ECS 2 as a course that i really wanted to learn.

Personal Project

Topic Internal Combustion Engine

influence of side oil on 2 stroke engine

Synopsis Motors with 2-stroke or 2-stroke engines are no longer produced in Indonesia. This is because the Indonesian government has imposed a ban on motorcycle manufacturers to produce motorbikes with 2-stroke engines. The motor with this engine is considered not environmentally friendly because Indonesia has followed the Euro 4 emission standards in 2018.

Maybe some of us have had a 2 stroke engine. But did you know that currently the selling price of used motorbikes with 2 stroke engines is still considered high? Call it the Yamaha RX-King and Yamaha F1ZR motorbikes, which are still much sought after and loved by collectors of old motorbikes. Many collectors must have known that motorbikes with 2-stroke engines have great sound and power, fast acceleration and are considered lighter. But unfortunately, 2-stroke motorbikes are also known as motorbikes that are wasteful of fuel and also motorbikes that give a lot of air pollution because of the thick smoke that is released from the exhaust. In addition, 2-stroke motorbike users have to spend more to buy side oil in order to maintain the performance of their favorite 2-stroke motorbike. Then what is the reason for 2-stroke motors need side oil? Here's an explanation.

Just like motorbikes in general, 2-stroke motorbikes also use engine oil, but the difference is that 2-stroke motorbikes have additional oil, namely side oil. Side oil is something that is vital on a 2-stroke motorbike. Because side oil has a different task from engine oil. Side oil carries out an important task, namely lubricating the cylinder parts on the engine where the side oil will later burn with the fuel. In addition, side oil also has a positive impact on piston and piston ring performance so that they work more optimally. Thus, side oil is very influential on the performance of a 2-stroke engine.

class 28/02/2023

The class begin with Prof DAI asking us about our health condition. He was so happy when he found out that all of the students in the class are in good condition. Then Prof DAI told us that when we grown up, all of our own actions it is the responsibility of each of us. After that Prof Adi explain us about pyrolisis. The pyrolysis (or devolatilization) process is the thermal decomposition of materials at elevated temperatures, often in an inert atmosphere. It involves a change of chemical composition. The word is coined from the Greek-derived elements pyro "fire", "heat", "fever" and lysis "separating".

Pyrolysis is most commonly used in the treatment of organic materials. It is one of the processes involved in charring wood. In general, pyrolysis of organic substances produces volatile products and leaves char, a carbon-rich solid residue. Extreme pyrolysis, which leaves mostly carbon as the residue, is called carbonization. Pyrolysis is considered the first step in the processes of gasification or combustion.

The process is used heavily in the chemical industry, for example, to produce ethylene, many forms of carbon, and other chemicals from petroleum, coal, and even wood, or to produce coke from coal. It is used also in the conversion of natural gas (primarily methane) into hydrogen gas and solid carbon char, recently introduced on an industrial scale. Aspirational applications of pyrolysis would convert biomass into syngas and biochar, waste plastics back into usable oil, or waste into safely disposable substances.