• Question: How does a car run on petrol

    Asked by soslg13 to Karen on 14 Mar 2017.
    • Photo: Karen Barrett

      Karen Barrett answered on 14 Mar 2017:

      Great Question – and it has a really simple answer.
      Petrol is pumped in to the engine from the tank.
      Then in what is called the 4 stroke cycle –
      1 – Intake – suck fuel in.
      2 – Compression – squeeze it really hard.
      3 – Power – at the end of the squeeze you add a spark, the fuel burns and pushes the piston downwards.
      4 – Exhaust – the fumes from the burnt fuel leave the engine.

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