The method provides a more detailed analysis of engine emissions than tests made while an engine is idling.

And yet another company is doing research on catalytic combustion to reduce engine emissions while improving efficiency.

The new controls would gradually cut engine emissions of two air pollutants, with the cuts accelerating sharply by 2030.

In addition to engine emissions, particle pollution can come from other sources, depending on where you live.

This reduces engine efficiency and performance and potentially increases engine emissions.

Most of that comment has consistently favored a ban, largely because of engine emissions and noise.

The safety features were significantly improved and engine emissions were reduced.

He focused his newly augmented eyes on the object and suddenly began reading engine emissions.

Also for 1999 provisions for a new air injection reaction system was introduced aimed at improving engine emissions.

The installation of a heated air intake system is hence beneficial to engine emissions but decreases maximum available power.