Category

Fuel & Ignition

Fuel delivery, injection, petrol and diesel combustion, spark and compression ignition.

0 of 3 lessons done

Start here: Spark Ignition and Combustion Timing

Learn it from the surface down 3 lessons

1
Mechanism
See it work0/2 done
How the parts move and interact, usually with a live 3D laboratory.
- Spark Ignition and Combustion TimingUp nextHow a spark plug lights the compressed charge, why the spark is timed before top dead centre, how the flame spreads to build pressure, and what knock is.Not started. 12 minutes. Includes an interactive lab.
- Fuel InjectionModern petrol engines meter fuel electronically: the ECU measures the air going in, works out how much fuel will burn cleanly with it, and opens the injectors for precisely timed pulses. Learn port and direct injection and closed-loop mixture control.Not started. 14 minutes.
2
Engineering
Go deeper0/1 done
The numbers, trade-offs and variants engineers design with.
- Diesel EnginesDiesels have no spark plugs: they squeeze air until it is hot enough to ignite fuel injected at very high pressure. See why that makes them efficient and torquey, and why they need glow plugs, turbochargers and elaborate exhaust cleaning.Not started. 14 minutes.