What will happen if SI engines is used in place of CI engines in trucks?

Using a spark ignition (SI) engine instead of a compression ignition (CI) engine in trucks would lead to major performance and efficiency issues. SI engines, which run on petrol, are not ideal for heavy-duty transport requiring high torque and fuel economy.

Key impacts include:

Lower torque output, reducing load-carrying capability.

Higher fuel consumption due to lower thermal efficiency.

Shorter engine life and increased maintenance costs.

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