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How Car Engines and Turbos Work, a free technology course on Tomo

How Car Engines and Turbos Work

Trace the path of power from a drop of fuel to rotating tires. Master the four-stroke cycle, mechanical drivetrain connections, and how turbos harness exhaust to unlock massive power.

Like Duolingo, but for How Car Engines and Turbos Work. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

A short one: 10 levels across 2 sections, about 20 minutes end to end, roughly 4 days at five minutes a day. It moves through The Mechanical Chain: From Combustion to Tires and Forced Induction: The Turbo Loop. It starts from scratch.

10 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Otto the Otter, the guide who teaches the How Car Engines and Turbos Work course
How Car Engines and Turbos Work
with Otto the Otter
10
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in How Car Engines and Turbos Work

  • Igniting the trapped air and fuel produces sudden, extreme heat and pressure
  • The expanding hot gas has nowhere to escape, forcing the movable piston down the cylinder
  • The downward shove on the piston turns the crankshaft into rotational wheel motion
  • The engine must suck in fresh air and fuel before doing anything else
  • The mixture is squished tightly before the spark plug ignites it
  • The burned waste gas must be pushed out before fresh mixture can enter again
  • Only the power stroke generates usable energy from burning fuel
  • Drawing in air, compressing it, and pushing out burnt gas all take physical effort from the spinning engine
  • Three out of four strokes are purely preparation and waste-clearing
  • Packing fuel molecules tightly together allows the flame to burn them faster and hotter
  • High starting density creates vastly higher peak pressure when ignited
  • Uncompressed fuel burns slowly like an open campfire rather than delivering a forceful shove
  • The engine only pushes on the crankshaft during one out of every four strokes
  • A heavy rotating mass carries momentum to coast through the three dead strokes without stalling or jerking
  • Without stored rotational momentum, the piston would halt during compression
  • Pistons only move straight up and down inside the cylinder
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives How Car Engines and Turbos Work the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

How Engine Cylinders Make Power

When burning gas expands inside a closed cylinder, what does it push against?

Get it right to open this lesson and 9 more in the app.

Course map

Where How Car Engines and Turbos Work takes you

  1. 1

    The Mechanical Chain: From Combustion to Tires

    • The Four-Stroke Cycle
    • Converting Pushes into Wheel Rotation
  2. 2

    Forced Induction: The Turbo Loop

    • Harnessing Exhaust to Pack More Air
    • Boost Dynamics and Turbo Lag

2 sections · 4 units · 10 levels. Built to play, not to enroll.

New

Tomo is in ChatGPT

Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.

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How it's taught

You pick the voice

This course
The Bestie

How Car Engines and Turbos Work is taught in the The Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Keep going

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