Question

In which step of a four-stroke engine cycle does the car release CO2, H2O, and CO?

Answer 1

Answer:

$\boxed{\text{exhaust stroke}}$

Explanation:

The four strokes are

1. Intake: The mixture of air and fuel enters the cylinder.
2. Compression: The mixture is compressed by a factor of about 11.
3. Ignition: A spark ignites the fuel, which burns and produces CO₂, CO, and H₂O.
4. Exhaust: The combustion products are expelled from the cylinder.

$\text{The cylinder releases CO _{2} , CO, and H _{2} O during the }\boxed{\textbf{exhaust stroke}}$