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.

Personal Project Progress 1

I order the material for my personal project. I am using aluminium plate grade 1100, with the specification om 1mm x 10cm x 15cm.

Materials and Apparatus

For this project, what we'll need is: Materials: 1. Aluminum plates 2. Container box (15 L) 3. Drafts 4. Used water bottles 5. Garden hoses 6. Sodium bicarbonate 7. Balloons

Apparatus: 1. Drill 2. Cutters 3. Beaker glass 4. Power supply (12V/5A and 12V/2A) 5. Cathode and anode connectors

Procedures 1. Drill holes on the box container to accommodate pipes, drafts, and a cathode cover. 2. Glue pipes, drafts, and cathode cover into the container 3. Insert cathode steels and anode steels into the drafts 4. Pour the container with water, and mix with sodium bicarbonate 5. Using a 12V/5A power supply, connect the power lines into cathode and anode poles 6. Insert a balloon into the cathode pipe. This will store the hydrogen 7. Turn on the power, and wait 30 minutes for hydrogen to form

Results From the results we can see that the more amperes are put into the system, the more power is produced.

Here is the link to our project PowerPoint presentation: [1]

Introduction ECS 1 class

Assalamualaikum Wr Wb. Hello again, my name is Bagas Tegar Bhadravyata. This is my introduction in ECS 1 class.

What is energy conversion system? Energy conversion systems are generally the heating, ventilation, air-conditioning, and refrigeration systems, including various components such as air cooling and heating devices, water cooling and heating devices, refrigeration equipment, and heat exchangers. Energy conversion technology refers to any system that converts energy from one form to another. Energy comes in different forms, including heat, work and motion. Moreover, potential energy can be in the form of nuclear, chemical, elastic, gravitational, or radiant energy (also known as light). Energy conversion, also termed as energy transformation, is the process of changing one form of energy into another. Energy conversion occurs everywhere and every minute of the day.

What is the function of energy conversion system? The function of an energy conversion system is to transform one form of energy into another. Energy conversion systems are essential in various industries and applications to harness and utilize different types of energy for various purposes. Some common examples of energy conversion systems include:

Power Plants: Power plants convert various energy sources, such as fossil fuels (coal, natural gas, oil), nuclear energy, renewable sources (solar, wind, hydro, geothermal), and biomass, into electrical energy.

Engines: Internal combustion engines and electric motors convert energy from fuel or electricity into mechanical work to power vehicles, machinery, and equipment.

Renewable Energy Systems: Solar panels convert sunlight into electrical energy, wind turbines convert wind energy into electricity, and hydroelectric dams convert the kinetic energy of flowing water into electrical power.

Batteries: Batteries store electrical energy for later use and convert it back into electricity when needed to power devices, vehicles, or backup systems.

Heat Engines: Heat engines, like steam engines and gas turbines, convert thermal energy into mechanical work and are used in power generation and various industrial processes.

Chemical Reactions: Chemical reactions in fuel cells and other chemical processes can convert chemical energy into electrical energy.

Thermoelectric Generators: These devices convert temperature differences (thermoelectric effect) into electrical energy and are used in niche applications like space probes and waste heat recovery.

Piezoelectric Generators: Piezoelectric materials convert mechanical strain or vibrations into electrical energy, and they can be used in sensors, energy harvesting devices, and some consumer electronics.

Photovoltaic Cells: These devices convert sunlight into electrical energy by utilizing the photovoltaic effect. They are commonly used in solar panels.

The function of an energy conversion system depends on the specific application and the type of energy it is converting. The goal is to efficiently and effectively convert one form of energy into another to meet the needs of various industries and daily life.

ECS 1 Class 1/11/2023

Assalamualaikum Wr Wb. Today we are going to study in CFD Lab in DTM building level 3. In the beginning of the class, Pak DAI took time to review a little bit about ECS 1 class before the mid term exam. Pak DAI explains about various kinds of turbine and reviewing some basic formula from ECS 1 class. There is also Bang Edo who taught us about Vertical-Axis Wind Turbine using CFDSOF and Paraview. At first we are struggling to install the program in our own laptop devices. I also find it a little bit hard to understand the program. But as soon as i started to pay attention to detail. I slowly started to understand the programs.

That is all from me, thank you for reading my page

Assalamualaikum Wr Wb.

ECS 1 Class 8/11/2023

Assalamualaikum Wr Wb. Today, the class started with reviewing about stress analysis. Pak DAI ask question about what process goes through when inventor doing stress analysis. Pak DAI said, inventor is a basic from numerical method. After that, we talk about force. There are two kind of force, static and dynamic.

E Bike project

Me and Amato does a few research for the e bike project. We find out what parts are needed to build a proper e bike. Building an electric bike (e-bike) involves several key components. Here's a basic list of components you would typically need:

Bicycle Frame: Choose a frame that is suitable for your intended use and can accommodate the necessary components.

Motor: Select an electric motor designed for bicycles. There are various types, including hub motors (front or rear wheel) and mid-drive motors. Hub motors are easier to install, while mid-drive motors offer better performance on varied terrain.

Battery: Choose a rechargeable lithium-ion battery pack. The capacity (measured in watt-hours, Wh) and voltage should match your motor specifications and riding preferences. Battery placement on the frame is also a consideration.

Motor Controller: This device regulates the power flow from the battery to the motor. It interprets signals from the throttle or pedal assist system and adjusts the power output accordingly.

Throttle or Pedal Assist System: Decide whether you want a throttle, which allows manual control of the motor's power, or a pedal assist system (pedelec) that automatically adjusts the assistance based on your pedaling.

Display/Control Unit: This component shows important information such as speed, battery level, and mode. It's often integrated with the controls for adjusting assistance levels.

Wiring and Connectors: High-quality wiring and connectors are crucial for safety and performance. Make sure they are compatible with the components you're using.

Brakes: Consider upgrading your brakes to handle the additional speed and weight of an e-bike. Some electric bike kits come with brake sensors that cut power to the motor when the brakes are applied.

Throttle or Pedal Assist Sensor: For throttle-controlled systems, a throttle sensor is needed. For pedal-assist systems, a sensor measures the force applied to the pedals and adjusts the motor assistance accordingly.

Charger: Purchase a charger compatible with your battery. Charging times depend on the battery capacity and charger specifications.

Lights and Reflectors: Ensure your e-bike is equipped with proper lighting and reflectors to enhance visibility, especially if you plan to ride at night.

Kickstand: An e-bike can be heavier than a regular bike, so a sturdy kickstand is essential for stability.

Fenders and Mudguards: Depending on your local weather conditions, fenders and mudguards can help keep you and your e-bike clean and dry.

Gearing System: Consider the gearing system on your e-bike, especially if you're using a mid-drive motor. It's essential to have a compatible and durable gearing setup.

Tires: Choose tires suitable for the type of riding you'll be doing, considering factors like terrain and weather conditions.

When building an e-bike, it's important to ensure compatibility among all components and, if in doubt, consult with experts or the manufacturers of the components you're using. Additionally, be aware of any local regulations regarding the use of electric bikes, as they can vary by location.

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