1.5 displacement gasoline engine can use 2.0 throttle?

For a 2.0-displacement vehicle with exhaust emission greater than 1.5 displacement and engine power greater than 1.5 displacement engine, the fuel consumption of 2.0-displacement engine is generally higher than that of 1.5 displacement engine. So it doesn't match and can't be used.

Valve joint: a controllable valve used to control the air entering the engine.