controlling the air throttle valve is a controllable valve into the engine, and the gasoline will be mixed into the combustible mixture gas into the intake pipe, so that combustion work. It is then the air filter, then under the engine block, known as the throat of an automobile engine.
1 Throttle free
type of the electronic throttle valve are electro-hydraulic, linear solenoid type, the stepping motor type and four kinds of DC servo motor type, but the electro-hydraulic and Since the stepping motor type since the control accuracy is not high, since the linear solenoid type large electrical power required, are rarely used in the car, the DC servo motor type well overcome the above two cases, so that the car the application more widely. In addition throttle also need to be replaced regularly, the length of time depends on the quality of air filter, oil quality, road conditions and other factors driving the vehicle.
Cause where
2 Throttle conservation
formed from the main throttle valve fouling oil vapor, followed by particles in the air and moisture, that is to say the use of qualified air filter and remove the crankcase vent tube under throttle dirty speed will be much slower. Built crankcase crankshaft, connecting the lower end of oil, the working temperature in this section is about 100 ° ~ 180 °. Oil may be thermally volatilizable, in use, the longer the time, the higher the temperature, the more volatile, how much compressed air cylinder coupled to the crankcase will squeeze through the gap of the piston ring, it is necessary to let go of a gas passage, or end of oil will form a positive pressure (see specific situation “night Walker” related articles). Cause crankcase vent pipe is connected to the throttle on the one hand the requirements of environmental protection, on the other hand the negative pressure of the intake gas extracted from the crankcase. When reaching the cooling oil inlet pipe of steam, which condenses on the oil inlet and the throttle, whereupon the steam entrained soot will be deposited at these sites, since the throttle opening slit maximum air flow, a small space The gas temperature at the end, so it is easy to condense most part.
Accordingly, the throttle depends on how long it will dirty air filter quality, the use of oil brand, quality, driving road conditions, air temperature conditions, engine operating temperature, driving habits and other aspects. Even on the individual, can not be a fixed number of kilometers to determine a throttle cleaning time, car washing first throttle longest interval, after due crankcase vent tube and continuous intake of hydrocarbon condensate, cleaning frequency It will increase, and different weather can also affect the speed of the throttle dirty.
of the throttle valve failure
Overview configuration
can be roughly divided electric throttle several be categorized intoPart: throttle valve, an electromagnetic actuator, the potentiometer, a controller (not some directly from the ecu tube, wherein the bypass valve failure which two types: hard and soft fault fault fault refers to hard mechanical damage, soft failure refers to dirt, and other disorders.
hard failure
the potentiometer resistance portion is formed by coating a layer of carbon film on a polyester substrate, which is actually a very low-level manufacturing process , durability is not high. to put it plainly, as we normally do not add potentiometer! sliding contact consists of a row of fine steel inverse claw, attention! anti pawl! this is simply worse! Further, the carbon protective film that agent is not coated, shedding charcoal cause poor contact, the lighting is inevitable! once repaired a carbon film is scraped leak, also seventy thousand kilometers, that Zhuer feet owe!
soft failure
cleaning throttle we often plagued most of the time because of the low throttle opening the air at high speed (several tens to several hundreds m / sec) flowing through the throttle gap, accumulation of dust gradually the air flow generated over the throttle regulation.
3. The throttle dirty Cause
Since the crankcase ventilation function and the charcoal canister solenoid valve of the engine, a small amount of gasoline vapor will be brought to the throttle valve, the throttle valve attachment of oil and petrol, will continue to adhere to the dust. How long will the dirty throttle, depending on the quality of air filter, oil quality, driving traffic, air temperature conditions, engine operating temperature, driving habits and other aspects. dirty motor oil, air filter for a long time does not change, poor quality air filter, will exacerbate the degree of dirty throttle..
4 integrity door removal technique
Note: This article demonstrates models for the FAW – Volkswagen 2011 Golf 6 1.4TSI manual comfortable. Mass EA111 1.4T using engine models are described herein with reference to the method of cleaning a throttle, 1.8TSI, 2.0TSI reference models may be appropriate. This article is strictly in accordance with the Golf 6 official service manual to operate, models of different brands, throttle position and its removal methods will differ, please do not try without a service manual.
corresponding to the engine throttle ● “throat”
for controlling the throttle valve is a controllable valve air into the engine, above which (or forward) an air filter device, below the engine block. In which the position of the throttle, the car equivalent of “throat.” After air entering the intake manifold through the throttle valve requires, and then mixed with gasoline, the combustible gas mixture to become involved in combustion work. Car idling is stable acceleration is flexible, and the cleanliness of the throttle is very related.
● How to split: ordinary screwdrivers will be able to cope with the
as long as the car to find the air filter, will be able to “six steps” section to find valve. We demonstrated this golf 1.4TSI special, since it is equipped with a turbocharged engine, and therefore the intake pipe between the air cleaner and the throttle valve and a pressure relief valve, and a pressure pipe. Although the structure is different from other selfHowever aspirated engine models, but disassemble the throttle is not too difficult, just an ordinary screwdriver can be solved.
First of all, we need to remove the cover of the engine, in order to disassemble the pressure tube and fixed thereto pipelines on. Owners should be noted that, in the course of removable screws, the screws to avoid falling into the engine compartment.
After removal of the pressure tube, we can see the golf throttle valve 6. Due to the lower throttle position by comparison, and more around the pipeline, so owners when removing the throttle to be very careful not to damage the pipeline.
After removing the throttle, engine block will be exposed, the owner must keep the air when I remember blocking the vent tube to prevent foreign matter into the engine block. .
How to clean the throttle valve 5
How to wash ●: Spray cleaner wiping with a cloth [ 123]
after removing the throttle, we can see that the throttle has a lot of grease inside and outside, but also a lot of dirt adhering impurities.
The cleaningAgent is sprayed on the dirty parts, you can wipe with a cloth carefully. Wipe the time can not be lazy, with particular attention to those pockets that filth. If the gap is too small, some can dip a cotton swab detergent.
as long as we carefully wipe clean the throttle completely clean, like new. With clean the throttle, the car can move smoothly to “breathe” the.
● cleaning effect: an engine load value is decreased to 1.2 percentage
Special service manual golf 6 Note: The clean throttle back mounting when the bottom to put some oil, to avoid damage to the rubber member interface. After installation, we use VW dedicated VAS-5053 data provided by the line of riders looked throttle state. Detecting at a water temperature needs to be 90 degrees, and closes the air conditioning case. Data show that, after the change of the throttle valve cleaning quite obvious, the load value before the cleaning was 3.5 percentage, the percentage drops to 1.2 after cleaning, excellent load value is close to the level (the lower the load value excellent).
What is the “5053 Data Line”?
5053 matches the data line program VAS-5053, is a tool designed for a computer for diagnosing VW and configuration, may be adjusted many hidden functions of the vehicle, the vehicle may be detected in the indicators and working conditions. 5053 data lines can shop by way of purchase, the price of 100 yuan. The current latest version is 11.12.
clean throttle to improve the fuel economy is also helpful. We instantaneous fuel consumption when idling car Golf 6 shut down air conditioning 0.5L, 1.4T engine Volkswagen be the lowest of the idle instantaneous fuel consumption.
Summary: Remove the throttle, it is to facilitate cleaning. Although it is operating a little trouble, but wins in clean thoroughly. 4S shop clean the throttle, the throttle alone is generally not removed for cleaning, and they will trampleThe throttle to open throttle, then cleaned, it is difficult washed very clean, there will be the risk of foreign objects fall in.