Q:A small toy aircraft with an engine model of COX 049 and a piston about 11MM in diameter

First of all, the piston is not round, and the side view is not square. This is due to thermal expansion at different parts of the piston in a high temperature environment.The local minimum gap of about 0.04, depending on the design, the smallest place probably in the piston to stop opening of the lower end of 15 to 20mm perpendicular to the piston pin position, of course not absolute, the design of the skirt length is not the same.The largest part of the gap is the fire bank, which is the place above the first ring, usually at 0,7~0.8mm

Q:I want to buy a Jetta, it can valve number two, another car is four, really a bit puzzled.

That is the intake and exhaust of the engine. It is estimated that you bought 1.6 or 2, and 1.8T has 5 cylinders per cylinder, and 20 for each. This thing is not advanced, that is, the beginning of the two valve, a little meat, and nothing else!

Q:Can 1 of the displacement be V6 cylinder or 6 displacement with L4 cylinder?

Displacement: the amount of space that is passed through the piston from the TDC to the lower dead point is called the cylinder displacement. If the engine has several cylinders, the sum of all the working volumes of the cylinder is called the engine displacement.

Q:How much is the cylinder pressure of the gasoline engine lower than that of the diesel engine?

Diesel is not easy to ignite, so it uses compression ignition, and gasoline engines use spark plugs to ignite gasoline. Can the pressure on the diesel fuel burn less? This is also an important reason for the low noise of gasoline engines.

Q:The cylinder in the paper towel. It's not square. One piece of that one

The easiest way is to pull the paper out.

Q:Like kenisaige CCXR, with only 4.8 V8 engine can output 1032 horsepower, but the output power of ordinary V8 in 300-600 Ma, such as Porsche Panamera turbo with 4.8 V8 output power of the engine, why it is only 500 horsepower, and I see some people on the Internet car, the V6 engine can be changed to 1000 horsepower, and the output power of ordinary V6 engine is only 200-300, this is why?

The power of the engine mainly depends on engine displacement and displacement speed, when the engine speed is high, the output power of the engine is improved, the speed of the engine to have the corresponding technical guarantee can work reliably in the design and manufacture.In addition, the use of supercharging technology can increase the power of more than 30% of the engine.

Q:What is the working principle of the cylinder?

The working mode of the cylinder is divided into the suction stroke, the compression stroke, the work stroke and the exhaust stroke.Two,(1): the intake stroke the intake valve opens, the exhaust valve closes and the downward movement of the piston, a mixture of gasoline and air into the cylinder; (2) the compression stroke, the intake valve and exhaust valve are closed, the piston moves upwards, the fuel mixture is compressed; (3) stroke: at the end of the compression stroke, the spark plug the spark, fuel burning fiercely, gas of high temperature and high pressure. High temperature and high pressure gas pushes the piston downward, which drives the crankshaft to rotate and works externally;(4) exhaust stroke: the intake valve closes, the exhaust valve opens, the piston moves upward, and the exhaust is expelled from the cylinder. (schematic diagram of the following four strokes).?Turn left and turn right |

Q:What's the difference between a L cylinder and a V cylinder? What's the good news?

Arrangement of cylindersType W arrangement and type VMany people think like V type engine cylinder arranged in a V shape, arrangement of W engine cylinder must be in a W shape, in fact, it is only approximate W shaped arrangement, strictly speaking should also belong to V type engine, at least is a variant of V engine.The V engine of each side of the cylinder and then a small angle stagger (such as Passat W8 small angle of 15 degrees), it has become a W engine. Or W engine cylinder arrangement is composed of two small V shape, a large V shape.Compared with W type and V type engine engine can be made shorter, the crankshaft can also be shorter, so the engine can save space, but also can lighten the weight, but its width is larger, so that the engine room is full.The biggest problem with W engines relative to the V engines is that the engine is divided into two parts by a whole, which inevitably causes a lot of vibration at the time of operation. To solve this problem, the Volkswagen designed two reverse rotating balance shafts on the W engine, allowing the vibration of the two parts to cancel each other in the interior.Volkswagen has three types of W engines, W8, W12 and W16

Q:How does the gasoline pump the tank to the cylinder?

An automobile engine produces power by igniting a mixture of air and fuel. The working procedures of the fuel supply system are as follows:1. The fuel is pumped out of the tank by a gasoline pumpGasoline pump internal construction drawingPhysical diagram of gasoline pump2. Pass the fuel filter to the injectorGasoline filterFuel injector3. The oil mist ejected from the nozzle is mixed with air. The intake pipe is sucked into the air cylinder and is discharged by the exhaust pipe after burning.As the pressure of the pump is greater, a fuel pressure regulator is needed to return excess fuel from the return pipe to the tank.Working principle diagram of cylinderInternal structure of fuel pressure regulatorFuel pressure regulator physical mapWorking order diagram of automobile fuel supply system

Q:Just saw the Audi A8L V12 engine, R8 is V10, the number of cylinders or car always feel good car should be more, so think of? Who can give a detailed account of his views on this subject?What is the purpose of the A8 V12 engine? Is it faster than R8?

Usually the number of cylinders, power is stronger, but the fuel consumption is relatively high, so the vehicle engine cylinder according to the specific needs of many, to the point of view of specific models, like A8L 4.2L and 3.6L V8 is also equipped with a V6 engine, according to the specific models and specific needs