Reducing Vehicle Pollution: Exhaust Gases and Control Methods
Accumulation of toxic products in the air can cause serious damage to health. Engine exhaust contains a compound atmosphere including unburned hydrocarbons and carbon monoxide.
Measures to reduce pollutant emissions aim to achieve the lowest possible gasoline consumption, high performance, and good engine behavior.
Sources of Pollution
Engine Crankcase Gases
These gases are sent through a recirculation circuit to prevent external output.
Exhaust Gases and Gasoline Vapors
These are recycled into the cylinders
Read MorePolymer Properties and Processing: A Detailed Look
Copolymerization
Copolymerization is the chemical modification of polymer properties resulting from the polymerization of two or more monomers.
Long-Term Mechanical Behavior
When a material is subjected to tension, it undergoes elastic deformation, but simultaneously begins a slow, permanent plastic deformation. This phenomenon is known as Creep.
- Creep Modulus Curves: Defined as the ratio of constant voltage applied to the material and the increasing deformation experienced over time.
- Relaxation Modulus
Compressed Air Distribution, Treatment, and Hydraulic Systems
Distribution Network
The distribution network is the set of pipes that leads compressed air to all the elements of the pneumatic circuit. This network starts from the deposit and guarantees the pressure and air velocity at all points. The pipes of the distribution network must have a diameter that ensures compliance with these conditions. The diameter of the pipe is a function of:
- Velocity of air circulation
- Pressure loss
- Working pressure
- Length of conduction
- Existing bottlenecks along the conduction
All
Read MoreUnderstanding Plastics: Types, Manufacturing, and Environmental Impact
Plastic is a synthetic material developed in the 20th century, derived from organic compounds like petroleum and other natural polymers through chemical reactions. These reactions create large molecules containing carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. Plastics are versatile materials found in nearly all types of everyday objects. Many plastics share characteristics such as being electrical insulators, lightweight, and easy to work with.
Obtaining Plastics
Plastics are obtained
Read MoreUnderstanding Electronics: Semiconductors, Diodes, and Transistors
The Basics of Electronics
The fundamentals of electronic technology are closely related to the behavior of electrons and various phenomena. The field of electronics, divided into multiple disciplines, has experienced rapid development in this century. Electronics has played a crucial role in this advancement, starting with vacuum tubes, then diodes and transistors, and subsequently with integrated circuits and microprocessors.
Semiconductors
Semiconductors are materials with properties between those
Read MoreElectronics Components and Concepts Explained
Electronics Components and Concepts
Diode: Two-terminal device that conducts in only one direction.
Fuse: Protective device that breaks when current exceeds a maximum value.
LED: Electronic device that conducts current in one direction only and lights when it is conducting.
Resistor: Component made of material that opposes the flow of current and has some value of resistance.
Resistor Colour Code: Coding system of coloured stripes on a resistor to indicate its value and tolerance.
PLCC: A square IC package
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