How does an engine throttle work?
0:044:37This is a mechanical throttle. Body so when you press on the gas pedal what you're doing is you'reMoreThis is a mechanical throttle. Body so when you press on the gas pedal what you're doing is you're actually opening up this valve. And allowing. For more air to pass into the intake manifold.
What is the throttle valve controlled by?
The electronic throttle actuator is controlled exclusively using the control signal from the engine management and with the assistance of a servomotor. If throttle valves are used in diesel engines, they are generally referred to as air management valves.
Does throttle control air or fuel?
A throttle body is a butterfly valve located between the air intake filter and the intake manifold. It regulates how much air can go into the engine, based on driver input through the gas pedal. As more air flows into the engine, it injects more fuel, thus allowing for more power.
How do you adjust a throttle valve?
Part 1 of 2: Test drive and determine how much to adjust the throttleMaterials Needed.Step 1: Perform a test drive. ... Step 2: Locate the throttle linkage. ... Step 1: Mark the current cable length. ... Step 2: Check the cable at wide open throttle. ... Step 3: Adjust the cable. ... Step 4: Perform a final check and then test drive.
What controls the throttle actuator?
The throttle body mounted in a gasoline engine is used to control engine power by regulating the amount of air inflow into the engine. In normal driving situations, the throttle valve of a throttle body connected to the accelerator pedal is controlled by a driver through the mechanical linkage.
Does the ECU control the throttle?
The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed sensor, and cruise control switches.
What module controls the throttle body?
The Powertrain Control Module The PCM will analyze the inputs from the APP, and then command the throttle body to act appropriately.
Which type of valve controls the throttling flow?
globe valvesThrottling valves are valves that allow you to adjust the amount of flow by being able to adjust the size of the flow path through the valve. The two main types of valves that we offer for throttling applications are our globe valves and our needle valves.
What is a butterfly valve used for?
The throttle valve is part of the intake system of the vehicle. It regulates the flow of incoming air. In the classic version, it is represented by...
What is the other name for the throttle valve?
The throttle, the throttle valve, the throttle valve - all these are the names of the same mechanism that changes the flow area of the intake tract.
What is an electronic throttle valve?
In contrast to the classic throttle, the electronic throttle is electrically driven. Its position is regulated by the control unit.
How does oil flow in a valve poppet?
The oil fluid flows into internal holes through the groove, then flows out from the left holes. To turn the valve poppet is able to change the groove gap area and throttle the oil by the area dimension. Feature:
What is a needle type throttle valve?
The needle type throttle valve is often used in general working condition. There is an eccentric slot of three angle shape on the cross section of valve poppet, the eccentric thro ttle valve adjusts the fluid flow rate by turning the valve poppet to change the size of throttle area. The eccentric type throttle valve feature is most similar ...
How does a needle throttle valve regulate fluid flow?
The needle type of throttle valve regulates the fluid flow rate by adjusting the size of throttle area through the axial movement of needle throttle poppet.
What is the principle of a home faucet?
The working principle of home faucet is the simple throttle valve, but the difference is hydraulic oil as media and high pressure in industrial field in stead of water in home. The throttle valve is throttling the fluid flow, there are many different structures designed to throttle and it is better to choose the correct one for some certain working ...
What is a V type engine?
(Show more) Full Article. Throttle, Valve for regulating the supply of a fluid (as steam) to an engine, especially the valve controlling the volume of vaporized fuel delivered to the cylinders of an internal-combustion engine. In an automobile engine, gasoline is held in a chamber above the carburetor.
How does air flow through a carburetor?
Air flows down through the throat of the carburetor, past the throttle valve, and into the intake manifold. A throat is formed by the reduced diameter, and acceleration of the air through this smaller passage causes a decrease in pressure related to the amount of air flowing.
What causes more fuel to flow?
Any increase in airflow caused by change in engine speed or throttle position increases the pressure differential acting on the fuel and causes more fuel to flow. See also venturi tube. This article was most recently revised and updated by Robert Curley, Senior Editor.
What is a valve in engineering?
Valve, in mechanical engineering, device for controlling the flow of fluids (liquids, gases, slurries) in a pipe or other enclosure. Control is by means of a movable element that opens, shuts, or partially obstructs an opening in a passageway. Valves are of seven main types: globe, gate, needle, plug (cock),…. internal-combustion engine.
How many types of valves are there?
Valves are of seven main types: globe, gate, needle, plug (cock),…. Internal-combustion engine, any of a group of devices in which the reactants of combustion (oxidizer and fuel) and the products of combustion serve as the working fluids of the engine.
What is FTP in motors?
Full Throttle Performance or FTP : is a performance measuring cycle carried out by running the engine at full load for an interval of 100 RPM ( Rated RPM to low idle value generally ) .
What is the VE of a 3.0L V6?
Volumetric efficiency (VE) at idle is typically 10-15% of full engine flow due to closed or mostly closed throttle. For a 3.0L 4 cycle V6 at an idle speed of 650 rpm and 10% volumetric efficiency the engine will flow 97.5 liters per minute according to the equation:
What is the throttle valve in a gas engine?
Throttle in Petrol/Gasoline engine is connected with a Butterfly Valve in the Carburettor (between Air Filter pipe and Intake manifold) through Accelerator Cable. When we twist the accelerator valve opens and allows more air to flow in . In ideal condition that valve is closed (85% closed slight gap is always present to allow minimum air to flow).
What is throttle in motor?
Throttle is a device that controls the engine RPM by directly controlling the amount of air going in . More Air means more fuel and more Powerful and quickly will be the blast, so the RPM of engine increase & vice versa.
What is 0.5 displ?
Where displ is the displacement in Liters, 0.5 is the constant needed to account for four cycle engines which only take in air every other rotation, speed is the engine speed in rounds per minute and VE is the volumetric efficiency as a result of intake and exhaust flow restrictions including the throttle plate . So we get the following:
What is the fuel consumption at idle?
The short answer is that fuel consumption at Idle is about 1% to 1.5% of a full throttle full speed engine and about 10% of a wide open throttle engine at idle speeds.
What is performance cycle?
First you must appreciate that performance cycle means meeting the desired torque at that particular RPM for a particular load and load for FTP is full load .
How is vacuum supplied in a motor?
As the voltage is not applied while the engine runs at no load, the vacuum is supplied into the vacuum chamber of the first diaphragm casing 8 through the ports A and B of the solenoid valve 15. Vacuum is not supplied into the vacuum chamber of the second diaphragm casing 9, thus the throttle valve is brought into the intermediate position II. Thus, the air flowing into the combustion chamber through the intake tube 1 is throttled to some extent. It has been discovered that the rate of throttle is advantageously 10% to 30% to mitigate vibration.
What is a throttle valve actuator?
An actuator for the throttle valve is vacuum-operated. A temperature sensitive valve is disposed in a conduit connecting the actuator to the vacuum source, thereby the throttle valve is brought into the full-open position when the engine is cool for preventing white smoke in exhaust gas.
What is an intake air throttle device?
An intake air throttle device, of a diesel engine, with a throttle valve disposed in an intake air passage. The throttle valve is moved into a full-open, an intermediate, and a full-closed position according to the engine operation.
What is a throttle valve?
An intake air throttle device, of a diesel engine, with a throttle valve disposed in an intake air passage. The throttle valve is moved into a full-open, an intermediate, and a full-closed position according to the engine operation. An actuator for the throttle valve is vacuum-operated. A temperature sensitive valve is disposed in a conduit connecting the actuator to the vacuum source, thereby the throttle valve is brought into the full-open position when the engine is cool for preventing white smoke in exhaust gas.
How many ports does the thermostat valve 13 have?
The thermostat valve 13 has three ports A, B, and C. When the temperature of the engine cooling water is below a predetermined value, the port A communicates with the port C so that atmospheric pressure is introduced into the first and second casings 8 and 9, bringing the throttle valve 3 into the full-open position I. When the temperature of the engine cooling water is above the predetermined value, the port A communicates with the port B, thus the vacuum from the vacuum tank 11 is introduced to both solenoid valves 15 and 20.
How does a diesel engine make noise?
It is well known that a diesel enige generates considerable vibration and noise when it stops or when it runs at no load. To mitigate such vibration and noise, an intake air throttle device, which has a throttle valve disposed in an intake air passage has been proposed. This throttle valve is actuated into a half-open position to throttle the air when the engine runs at no load, i.e., engine idling or deceleration, and actuated into a full closed position to shut out the air when the engine stops. This, however, causes incomplete combustion and white smoke in exhaust gas when the air is throttled before engine warm-up, even if the fuel injection pump of the engine has a cold start fuel increasing device.
How is a vacuum pump connected?
The vacuum is prepared in a vacuum source or a vacuum pump (not shown). The vacuum pump is connected to a vacuum tank 11 via a pipe 10. The vacuum tank 11 is connected to the first and second diaphragm casing 8 and 9 through a common pipe 12 and then through separate pipes. In this common pipe 12, a change-over valve having a bimetallic element, which is sensitive to the temperature of the engine cooling water, is disposed. From this common pipe 12, a pipe 14, a change-over valve 15 of a solenoid-operated type, a pipe 16, a one-way delay valve 17, and a pipe 18 are sequentially connected to the first diaphragm casing 8. A pipe 19, a change-over valve of a solenoid-operated type 20, and a pipe 21 are sequentially connected to the second diaphragm casing 9.
