The " throttle " ( fuel valve ) of a monosoupape therefore provided only a very limited degree of speed regulation, as opening it made the mixture too rich, while closing it made it too lean ( in either case quickly stalling the engine ).

Although a conventional carburetor, with the ability to keep the fuel / air ratio constant over a range of throttle openings was precluded by the spinning cylider block, it was possible to adjust the air supply through a separate flap valve or " bloctube ".

The pilot needed to set the throttle to the desired setting ( usually full open ) and then adjust the fuel / air mixture to suit using a separate " fine adjustment " lever that controlled the air supply valve.

When the throttle is closed, compressed air will flow to the throttle valve without an exit ( i. e., the air has nowhere to go ).

Between points 4 and 5, the liquid refrigerant goes through the expansion valve ( also called a throttle valve ) where its pressure abruptly decreases, causing flash evaporation and auto-refrigeration of, typically, less than half of the liquid.

A flow resisting valve called a choke, similar to the throttle valve, was placed upstream of the main jet to reduce the intake pressure and suck additional fuel out of the jets.

Below the venturi is a butterfly valve called the throttle valve — a rotating disc that can be turned end-on to the airflow, so as to hardly restrict the flow at all, or can be rotated so that it ( almost ) completely blocks the flow of air.

Similarly the idle and slow running jets of large carburetors are placed after the throttle valve where the pressure is reduced partly by viscous drag, rather than by Bernoulli's principle.

As the throttle opens up, the vacuum decreases and the spring opens the valve to let more fuel into the main circuit.

The air valve opens progressively in response to engine speed and throttle opening, gradually allowing more air to flow through the secondary side of the carburetor.

The Cube did, however, feature many advanced technologies either not seen or only being seen now in other MotoGP bikes – technologies including ride by wire throttle and pneumatic valve actuation systems.

The governor is connected to a throttle valve that regulates the flow of working fluid ( steam ) supplying the prime mover ( prime mover not shown ).

If the motion goes far enough, this motion causes the lever arms to pull down on a thrust bearing, which moves a beam linkage, which reduces the aperture of a throttle valve.

Wood gasifiers can power either spark ignition engines, where 100 % of the normal petrol can be replaced with little change to the carburation, or in a diesel engine, feeding the gas into the air inlet that is modified to have a throttle valve, if it didn't have it already.

This effect is more readily achieved on carbureted gasoline engines, because the fuel supply to the carburetor is typically regulated by a passive mechanical float valve and fuel delivery can feasibly continue until fuel line pressure has been relieved, provided the fuel can be somehow drawn past the throttle plate.

The valves use the pump pressure and the pressure from a centrifugal governor on the output side ( as well as hydraulic signals from the range selector valves and the throttle valve or modulator ) to control which ratio is selected on the gearset ; as the vehicle and engine change speed, the difference between the pressures changes, causing different sets of valves to open and close.

Most modern designs use a solenoid-operated valve that is triggered by a switch on the throttle linkage or by the engine control unit ( ECU ) in response to an abrupt increase in engine power.

If the driver abruptly opened the throttle, a valve would switch the stator pitch to a different angle of attack, increasing torque multiplication at the expense of efficiency.

The carburetted versions feature an unusual Weber 28 / 30 carb ( replacing the unreliable Ford VV unit ) with a manifold vacuum-actuated secondary choke ( power valve ), instead of the more usual sequential linkage which opens the secondary butterfly at 3 / 4 to full throttle.

Train driving simulation games usually allow a user to have a " driver's view " from the locomotive's cab and operate realistic cab controls such as throttle, brake valve, sand, horn and whistle, lights etc.

The system output is the car's speed, and the control itself is the engine's throttle position which determines how much power the engine generates.

A primitive way to implement cruise control is simply to lock the throttle position when the driver engages cruise control.

This type of controller is called an open-loop controller because no measurement of the system output ( the car's speed ) is used to alter the control ( the throttle position.

In a closed-loop control system, a sensor monitors the system output ( the car's speed ) and feeds the data to a controller which adjusts the control ( the throttle position ) as necessary to maintain the desired system output ( match the car's speed to the reference speed.

The advantages to DCC are that track voltage is constant ( usually in the range of 20 volts AC ) and the command throttle sends a signal to small circuit cards, or decoders, hidden inside the piece of equipment which control several functions of an individual locomotive, including speed, direction of travel, lights, smoke and various sound effects.

* The throttle driver in the cruise control servomechanism

The output value will adjust the throttle and then the control cycle will begin again to generate the next value.

The throttle ( accelerator ) linkage does not directly control the flow of liquid fuel.

The throttle is connected, usually through a cable or a mechanical linkage of rods and joints or rarely by pneumatic link, to the accelerator pedal on a car or the equivalent control on other vehicles or equipment.

More sophisticated versions of this can also control throttle levels and brakes simultaneously.

There are three primary flight controls: control stick, rudder pedals, and throttle.

The rudder pedals provide yaw control, and the throttle controls engine power.

The Tri-Power setup included one center carburetor with idle control and two end carburetors that did not contribute until the throttle was opened more than half way.

Nitromethane nitro powered models utilize a single servo for throttle and braking control ; rotation of the servo in one direction will cause the throttle on the carburetor to open, providing more air and fuel mixture to the internal combustion engine.

All cars require a transmitter, which has the joysticks for control, or in pistol grip form, a trigger for throttle and a wheel for turning, and a receiver which sits inside the car.

The radio is wired up to either electronic speed controls or servomechanisms ( shortened to " servo " in common usage ) which perform actions such as throttle control, braking, steering, and on some cars, engaging either forward or reverse gears.

Controlling all the primary controls of a powered aircraft ( rudder, elevator, ailerons and throttle ) was known as ' full-house ' control.

It was originally developed by Orbit for a transmitter specially designed for Associated cars It has been widely accepted along with a trigger control for throttle.

* Keihin Indiana Precision Technology: a subsidiary of Honda Motor that manufactures automotive components including intake manifolds, engine control units, and throttle bodies.

This design has the advantage of being stackable, allowing several smaller engines to be placed in a row to make one larger engine while augmenting steering performance with the use of individual engine throttle control.

The foot throttle gives the operator more automobile-like control over the speed of the tractor for road work.