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List of contents of this article:

• 1、Engine PCV valve Check the cause and overhaul of crankcase poor ventilation
• 2,Engine valve working principle
• 3、Where is the air valve of the Wichi engine

Inspection of the engine PCV valve Causes and overhaul of the crankcase

PCV valve introduces the leaking gas into the intake manifold to prevent discharge into the atmosphere. The working principle of Nissan HR16DE engine crankcase ventilation system is shown in the figure below. The PCV valve is installed on the front of the engine valve chamber cover. The PCV valve opens when the load is open, and fresh air enters the crankcase from the back of the rocker arm cover.

If the ventilation valve is often in a normal open state, the pressure in the crankcase is introduced into the air intake system too early, resulting in unstable intake and engine shaking; oil leakage.

Engine oil leakage. If the ventilation valve is closed, the curveThe air pressure in the axle box will become very large, which will damage the oil seal of the engine. Over time, the oil will seep out of the cracks on the surface of the engine body. The engine shuts down abnormally. Closed or aging ventilation valves basically cause such problems.

engine valve working principle

1. Control the hydraulic oil in the corresponding pipeline through the camshaft regulating valve to drive the blades in the regulator, and then drive the camshaft to rotate to realize the advance or delay of valve opening and closing, adjustable The crankshaft angle with a range of 60°.

2. Monitor the engine speed through the magnetoelectric speed sensor, initialize the limit setting, and cut the valve when the engine speed exceeds the limit.

3. EngineWhen it is not working, the PCV valve is closed under the action of the spring to prevent the crankcase gas from rushing into the atmosphere after the engine is turned off.

4. The working principle of the idle control valve is as follows: the idle control valve is powered by the ignition switch. When the ignition switch is placed in the ON position, the idle control valve is energized, and the engine computer controls its loop. When the working parameters of the engine deviate from the normal value, use this valve to adjust the idle speed.

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What does the engine exhaust valve control?

1. The exhaust gas valve, also known as the oil-gas separator or pressure control valve, is installed between the compressor outlet and the condenser inlet. By separating the oil and gas, the heat transfer effect in the condenser and evaporator is improved, which is very important for the system with poor mutual solubility between the lubricating oil and the work quality.

2. The function of the automobile exhaust gas valve is to enable the automobile exhaust gas to circulate into the cylinder combustion again, and this small part of the exhaust gas reduces the temperature in the cylinder during combustion. Because NOX is generated under high-temperature oxygen-enriched conditions, it inhibits the generation of NOX, thus reducing the content of exhaust gas. The reasons for the damage of the exhaust valve are: the quality problem of the exhaust valve itself.

3. The function of the automobile exhaust gas valve is to enable the automobile exhaust gas to circulate into the cylinder combustion again, and this small part of the exhaust gas reduces the temperature in the cylinder during combustion. Because NOX is generated under high-temperature oxygen-rich conditions, 5261 inhibits the generation of NOX, thus reducing the NO in the exhaust gas. The content of X.

What is the reason why the engine air intake valve is broken?

The reasons for the damage of the exhaust valve are: the quality problem of the exhaust valve itself. Improper maintenance.

The failure of the air intake valve solenoid valve is usually manifested as: abnormal engine operation or insufficient power; at high, medium and low speeds, the engine works unevenly and rhythmic vibrating silencer discharges black smoke and releases cannons; increases fuel consumption; the engine cannot be started in serious cases.

[Pacific Automobile Network] The phenomenon of broken air intake valve is usually manifested as: finding abnormal engine operation or insufficient power will affect engine performance. Under idle conditions, the fuel is easy to burn insufficiently, and the piston valve is more likely to produce carbon accumulation. Too much carbon accumulation will directly affect fuel economy, as well as the performance and life of the engine.

The symptoms of the broken air intake solenoid valve are: abnormal operation of the engine or insufficient power. At high, medium and low speeds, the vibration muffler of the engine works unevenly and has a rhythm, exhausting black smoke and releasing cannons.

Insufficient power, poor acceleration and other failures of the engine may be caused by damage to a part of the air intake system. For example, throttle valve failure, air intake duct carbon accumulation, vacuum pipe rupture, air flow meter failure.

What is the function of the engine exhaust valve?

1. The exhaust gas valve is actually called "oil separator" or "pressure control valve". The engine exhaust valve is mainly responsible for controlling the exhaust gas output when the car is burned. Due to the operation of exhaust valves, cars will reduce the emission of nitrogen oxides, which is beneficial to environmental protection.

2. [Pacific Automobile Network] The function of the automobile exhaust gas valve is to make the automobile exhaust gas enter the cylinder and circulate and burn again, and this small part of the exhaust gas reduces the temperature when the cylinder burns, and also reduces the content of NOX in the exhaust gas.

3. The function of the automobile exhaust gas valve is to enable the automobile exhaust gas to circulate into the cylinder for combustion again, and this small part of the exhaust gas reduces the temperature in the cylinder during combustion. Because NOX is generated under high-temperature oxygen-rich conditions, it inhibits the generation of NOX, thus reducing the content of exhaust gas.The reasons for the damage of the exhaust valve are: the quality problem of the exhaust valve itself.

Where is the air valve of the Wichi engine

The connection between the engine cylinder head and the cylinder head. The one-way valve of Toyota Wichi exhaust gas is at the junction of the engine cylinder head cover and the cylinder head.

Yes. According to the instruction manual, the manual exhaust valve of the Toyota Wichis tank is located in the upper left of the water tank. Vios is a home entry-level model specially designed and developed by Toyota for the Asian market.

Where is the Toyota Vios cylinder cushion? The Toyota Vios cylinder pad is located at the junction of the engine cylinder head and the cylinder head. The working principle of the car cylinder is to guide the piston to move in a straight line in the cylinder.

inA regulating valve is set up on the engine exhaust pipe, which increases the pressure of the exhaust stroke by closing the valve, and uses the negative pressure generated to obtain the power.

on the throttle valve. According to the official website of Fox, the additional air valve of the classic Fox is located on the throttle valve. Specifically, it is installed on the right side of the intake pipe, close to the throttle. This valve can control the flow of air into the engine, thus helping to adjust the combustion efficiency of the engine.

Another test method is to remove the crankcase intake pipe from the air filter after the PCV valve is reinstalled and gently cover the nozzle with a thin sheet of paper. When the pressure in the crankcase decreases (about 1 minute later), you should be able to clearly see the thin paper being sucked into the nozzle. In addition, after stopping the engine, remove the PCV valve and shake it by hand.