How about the engine of the VVL, what does the engine of the vvl mean

VVL is the abbreviation of Variable Valve Lift, which means variable valve lift. The valve lift of a conventional gasoline engine is fixed and immutable. That is, there is only one cam profile for camshafts.

This makes it impossible for the lift to respond well to both high and low speeds. The valve lift of a conventional gasoline engine – the cam profile design is a balanced choice for the engine in all operating conditions. As a result, the engine does not get the best high-speed efficiency or the best low-speed torque.

But the most balanced performance in all operating conditions is obtained. With the use of the VVL, the engine can get a valve lift that meets the needs of both high-speed and low-speed areas. The result is improved engine high-speed power and vulgar torque.

In engines with VVL technology, the valve travel can be changed according to the engine speed. At high speeds, a long stroke is used to improve the intake efficiency and make the engine breathe more smoothly, and at low speeds, a short stroke is used to generate greater negative intake pressure and more vortices, so that the air and fuel are fully mixed, thus improving the torque output at low speeds. More energy savings.

Domestic. So so. BYD uses.

The full name of VVL is Variable Valve Lift, which means Variable Valve Lift. In simple terms, the variable valve timing system changes the timing of valve opening and closing, while the variable valve lift changes the valve opening. The valve lift of a conventional gasoline engine is fixed.

That is, the camshaft has only one cam profile. This makes it impossible for the lift to keep the engine at high speed and.

The full name of VVL is Variable Valve Lift, which means Variable Valve Lift. In simple terms, the variable valve timing system changes the timing of valve opening and closing, while the variable valve lift changes the valve opening.

The valve lift of a conventional gasoline engine is fixed. That is, the camshaft has only one cam profile. This makes it impossible for the lift to make the engine respond well in both the high and low speed ranges.

The valve lift cam profile design of traditional gasoline engines is a balanced choice for the engine under various working conditions. As a result, the engine does not achieve either optimal high-speed efficiency or optimal low-speed torque. But for the most balanced performance in all operating conditions.

With the VVL, the engine gets the required valve lift at both high and low speeds. This increases the engine's high-speed power and low-speed torque.

So what are the advantages of variable valve lift over variable valve timing? Because of the variable valve timing technology, the valve opening lift is only a fixed size regardless of the engine speed, and the performance improvement is not noticeable by changing the timing. However, the variable valve lift technology can change the valve opening depth, and in certain cases, the valve opening can be expanded, and the cylinder air intake can be significantly increased, so the power increase is more direct.

What does the VVT-IE engine mean.

Toyota's VVT-IE is an intelligent variable valve timing system driven by an electric motor. The traditional hydraulic VVT-I cannot work at low temperature or low speed due to low oil pressure and poor lubrication, so compared with the hydraulic VVT-i system, the motor-controlled VVT-IE has a faster response speed, more precise control, and stepless adjustment.

The VVT-IE system consists of a camshaft control motor assembly, a crankshaft position sensor, a camshaft position sensor, and a VVT sensor. The camshaft control motor assembly is composed of a camshaft control motor, a cycloidal reduction mechanism, a spiral disk, a connecting mechanism and a timing sprocket.

The working principle of VVT-IE: when controlling the timing advance, the speed of the camshaft control motor is higher than the speed of the camshaft, the spiral plate is driven by the motor through the deceleration mechanism, and the connecting control pin slides to the inside of the groove along the spiral plate, so that the connecting mechanism makes the camshaft disc rotate in the direction of advance. When the timing is delayed, the speed of the camshaft control motor is slower than the speed of the camshaft, and the screw disc is driven by the motor through the deceleration mechanism, and the connecting control pin slides out of the groove along the screw disc to make the camshaft disc rotate in the direction of delay.

When the motor speed is the same as the camshaft speed, the spiral disc does not rotate, the connecting control pin does not move, and the valve timing does not change. What does vvl engine mean what does vvt-ie engine mean @2019

A VVT engine is an engine with a variable valve timing system. VVT stands for VariableValvetiming, which is the Variable Valve Timing System. The advantages of automobile engines using VVT system are fuel economy and large power-to-lift ratio; The disadvantage is that the torque in the middle section is insufficient.

The VVT system can adjust the phase of the engine cam according to the configured control and actuation system, and then the valve opening and closing time changes with the change of engine speed, thereby improving the charging efficiency and increasing the engine power. VVT Technology has a history of more than 30 years. In 1980, Alpha Wolf used VVT technology for the first time.

Honda first used VVT technology with variable valve lift in 1989; In 2001, BMW used VVT technology to replace the traditional throttle for the first time.

The so-called VVT variable valve timing, to put it bluntly, is to find a way to change the cam and then change the characteristics of these two curves, such as the advance and delay of the start and end points and the control of the maximum lift. When the automobile engine is at low speed, it is required to close the intake valve in advance, and to meet the requirements of closing the intake valve in advance at low speed, the maximum torque can be increased; When the car engine is at high speed, the intake valves need to be closed later, which increases the maximum power.

The technology adopted by the VVT engine, namely the continuous variable valve timing technology, is able to continuously adjust the valve opening and closing time and air intake volume of the engine, so as to increase the engine power, optimize the torque curve, improve the power of the product, reduce fuel consumption. VVT technology is the trend of car power development. Here's what does the VVT engine mean I brought to you, I hope it will be helpful to you.

VVT is an abbreviation for VariableValvetiming, which refers to the variable timing valve system. The technology itself is not magical, but it has a certain ability to transform decay into magic. Efficacy.

It is characterized by ensuring stable combustion, reducing fuel consumption, effectively improving hydrocarbon and nitrogen oxide emissions, and at the same time expanding volumetric efficiency and improving combustion performance. Of course, the principle of VVT technology is actually very simple: because the engine needs different power at different times, VVT technology adjusts the air intake volume by adjusting the valve opening, so that the engine has a more ideal working condition at different speeds

Delay the opening time of the intake valve, reduce the valve overlap angle, stabilize the combustion state at idle, reduce fuel consumption and pollution emissions under medium working conditions (driving at a constant speed at medium speed), and improve engine work efficiency at high speeds; By opening the intake valves earlier and increasing the valve overlap angle, more torque can be obtained during low-speed and heavy-duty operation (starting, acceleration, climbing).

Explanation 2, VVT engine, CVVT engine, VTEC engine are actually the same generation of technology gasoline engine, they all refer to the use of continuous variable valve timing technology, as well as the use of variable intake and exhaust manifold length technology, according to the different working states of the engine, by adjusting the timing of valve closure and the length of the intake and exhaust manifold, so as to improve the power performance of the engine, improve fuel economy.

The advantages are: 1. Low fuel consumption; 2. Strong power; 3. Environmental protection.

The disadvantages are: 1. The engine relies too much on electronic technology; 2. The requirements for gasoline labeling are increased.

Explanation 3: The technology used in the VVT engine, that is, the continuous variable valve timing technology, which can continuously adjust the valve opening and closing time and air intake of the engine, so as to improve the engine power, optimize the torque curve, improve the power of the product, reduce and reduce fuel consumption. VVT technology is the trend of car power development.