Let's learn about the petrol engine.

time
3 mins read
feature image

The Art of petrol engines

The holy grail of engineering marvels is the internal combustion engines. The golden currency keeping this grail running is petroleum. In reality fuel is the name of the game. Most vehicles you find on the road strolling around these days use petroleum engines except with the use case of heavy vehicles. So what sets the petroleum engines apart and how exactly does it work?

What are the main parts of this petroleum wizardry?

  • Cylinder Head
  • Engine Block
  • Crank
  • Cams
  • Suction Valve
  • Spark plugs
  • Cylinder
  • Piston rod
  • Piston

How exactly do these parts come together?

  • A petrol engine works under 4 strokes.
  • Suction stroke
  • Compression stroke
  • Power stroke
  • Exhaust stroke

When the piston reaches the peak position it's known as the top dead center and the other end of that is called the bottom dead center. The diameter of the piston matches up with the diameter of the cylinder ranging slightly smaller by the narrowest of margins allowing it to travel back and forth.

Suction Stroke

During the suction stroke the piston makes its way to the bottom dead center and along with that creates a vacuum within the top half of the chamber. With the exhaust valves closed the only valves that are open are the valves releasing the Air and gas mixture to the combustion chamber.

Compression stroke

As the piston hits bottom dead center it moves back into position to the top center position reaching maximum compression of the combustible gasses and fuel present within the top half of the cylinder. During this process, both the exhaust valves and the suction valves are closed up.

Power stroke

This is the showman out of the four strokes. At their peak with the air fuel mixture compressed a spark is introduced in order to create combustion, Which sends the piston right back to the bottom dead center.This is the main event which produces energy to run the vehicle. Literally speaking your combustible gas emits higher pressures that send the piston back into bottom center position.

Exhaust blow

This is where your end products are excreted. The piston travels back up into top dead center and during this process the burnt fuel and gasses are excreted to the exhaust valves which are open.

This is how things go about in your petrol engine,The smaller more aggressive brother to diesel engines.You've used this your entire life and now you're beginning to wonder how things really worked out beneath the hood.So let your friends and fellow drivers be aware of what's actually going on underneath their hood.

Nipuna Marasinghe

Written by

Nipuna Marasinghe

Similar News

  • Auto Parts & Accessories

    Why You Need a Dash Camera in Your Vehicle

    time
    3 mins read
  • Auto Parts & Accessories

    Why Do You Need a Dash Cam?

    time
    4 mins read
  • Auto Parts & Accessories

    Why Do We Use Fragrance Diffusers in Cars?

    time
    4 mins read
  • Auto Parts & Accessories

    Let's Learn Properly About Tinted Films

    time
    6 mins read
  • Auto Parts & Accessories

    2026: New Quality Standards (SLSI) for Vehicle Spare Parts and Anti-Counterfeit Laws

    time
    4 mins read
  • Auto Parts & Accessories

    The Difference in Maintenance: Air-Cooled vs. Liquid-Cooled Motorcycles

    time
    3 mins read
  • Auto Parts & Accessories

    How to Check Your Engine Health via Spark Plugs

    time
    3 mins read
  • Auto Parts & Accessories

    The Difference Between Ceramic Coating and Graphene Coating

    time
    3 mins read
  • Auto Parts & Accessories

    Difference Between Genuine Parts and Duplicate Parts

    time
    4 mins read
  • Auto Parts & Accessories

    The Function of EGR

    time
    4 mins read

Latest Car Reviews

  • Mazda 3 Sedan 1.5L 2025

    Sedan

    Rs 19.5M - 21.5M

  • Toyota Alphard Hybrid 2025

    MPV

    Rs 65M - 80M

  • Honda City RS 1.0 VTEC Turbo CVT 2025

    Sedan

    Rs 14.7M - 15.3M

  • Hyundai Exter SX Smart AMT 2025

    SUV

    Rs 10M - 11.5M

  • Kia Sportage Hybrid 1.6T HEV 2026

    SUV

    Rs 26.5M - 36.5M

  • Kia EV5 Standard Range 2026

    SUV

    Rs 26M - 32M

  • BYD Racco 300Premium 2026

    Kei

    Rs 11.5M - 11.5M

  • Toyota RAV4 2.0L Petrol 2026

    SUV

    Rs 37M - 44M

  • Toyota RAV4 2.5L Petrol 2026

    SUV

    Rs 48M - 50M

  • Toyota RAV4 2.5 Hybrid AWD 2026

    Compact SUV

    Rs 420M - 50M

  • Hyundai i20 Sportz (O) IVT 2025

    Hatchback

    Rs 10.2M - 12.9M

  • Toyota Glanza V AMT 2025

    Hatchback

    Rs 10.5M - 12.1M

Latest Bike Reviews

  • Yamaha FZ-S V4 2026

    Motorcycles

    Rs 1.2M - 1.5M

  • TVS NTorq 150 TFT 2026

    Scooters

    Rs 1.1M - 1.2M

  • Suzuki Burgman Street 125 Ride Connect TFT Edition 2026

    Scooters

    Rs 1.2M - 1.3M

  • Honda PCX160 ABS 2026

    Scooters

    Rs 1.7M - 1.9M

  • Yamaha XSR155 2026

    Motorcycles

    Rs 1.5M - 1.8M

  • Honda CB350 DLX Pro 2025

    Motorcycles

    Rs 2.5M - 2.8M

  • Royal Enfield Classic 350 2025

    Motorcycles

    Rs 2.4M - 2.8M

  • Kapla ZL9 2026

    eBikes

    Rs 387K - 389K

  • Yamaha Ray ZR 125 Fi Hybrid 2025

    Scooters

    Rs 700K - 830K

  • Honda SP 125 2025

    Motorcycles

    Rs 650K - 780K

  • Hero Splendor Plus 2025

    Motorcycles

    Rs 600K - 730K

  • Bajaj Platina 100 2025

    Motorcycles

    Rs 600K - 800K

hero

Post your car or bike ad on ikman in 2 mins!