There was no throttle valve or regulator to control the engine speed.

The year 2000 again saw a total redesign of the engine, now with dual throttle valve electronic fuel injection.

Details include a method of improving breathing by using an additional throttle valve in each inlet port.

Regulated air entering passes through the throttle valve which is typically controlled by a trigger in the hand grip.

In these conditions, the throttle valve is nearly closed, and the engine needs to work to draw air.

The small wheel was the throttle valve for the astern turbines.

When the blaze touched the gasoline a sheet of flame shot upward and the heat caused the throttle valve to open.

This required the use of a throttle valve in the steam supply, controlled by the governor.

These early governors operated a throttle valve to control the flow of steam to the engine.

It was regulated by a throttle valve on the blast pipe.