Automobile engine is the heart, as the car walk to provide power, the automobile’s power performance, economy, environmental protection. Simple talk on engine is an energy conversion mechanism, the gasoline (diesel) heat, through the sealing cylinder combustion gas expands, pushes the piston to do work, into mechanical energy, which is the most basic car diagnostic tool of engine.
All engine structure is for energy conversion services, although the engine with the car through 100 years of history, both in the design, manufacture, process or performance, control has greatly improved, the basic principles remain the same, this is a creative era, those engine designers, continue to have the latest technology and engine com., had turned the engine into a complex integration of mechanical and electrical products so that the engine performance to achieve the perfect degree, the world famous automobile manufacturers will also engine performance as competition window, then what is the engine performance?
Engine classification
Modern high-tech in the engine to be the embodiment of perfection, some new technology, new structure widely used in engine. Such as V12, V8, V6 engine: they refer to cylinder are arranged in a V type, the engine to make full use of dynamics, has good stability, increasing the engine displacement, reduce engine height. Such as: AudiA860 W12-12 cylinder V type arrangement of engine, BENZS600 V12-12 IV type arrangement of engine cylinder.
In general, according to the different engine displacement size is divided into three cylinder, four cylinder, six cylinder, eight cylinder types. The current 1.3L-2.3L cars mostly adopts the straight four cylinder engine, which is characterized by small size, simple structure, convenient repair; more than 2.5L displacement is generally uses multiple cylinder design, including in-line six cylinder, such as BMW; there is also a certain angle are arranged on both sides of the V type six cylinder engine, can have the effect of reducing vibration and noise, such as the Buick cars; in general the greater the displacement, the engine power is higher. But now some small displacement of the car through the turbocharger, multi-valve, variable timing device so as to increase power.
Engine performance
The performance parameters of the engine is most can manifest the engine capable of working parameters, including: displacement, maximum power, maximum torque.
On the displacement: displacement is often associated with engine power together, displacement size affects engine power level, usually also put it as high, cheap car division, in the standard. What is the rate? As we all know, the piston within the cylinder for reciprocating movement up and down reciprocating motion, it must have a highest point and the lowest point, the piston from the lowest to the highest point of the sweep of the cylinder volume, called the cylinder displacement, the sum of all cylinder capacity called engine displacement, clearly 3 displacement for you should to one’s heart’s content.
On maximum power and maximum torque: This is often the most people easy to confuse the two concepts, some people think that the car’s power is greater, the greater the power, in fact. The same 300 horsepower, the car could make the car run up to 250 km / hour or more speed, but in a truck, may only up to 150 km / h speed, but it can drag the 30-40 ton container. It lies in the mysteries of the two car torque are very different, in simple terms, the power performance in high speed, the engine performance curve diagram, along with the rise of rotational speed and increased significantly, which determines the car can run fast, torque is not necessarily at high speed when played, in the graph relatively flat, it can be determined when the car is driven force, including acceleration.
In the interpretation of engine parameters, needs to pay attention, do not see how big power, but also to see torsion parameters, and pay attention to when the engine is at maximum power, maximum torque speed, of course, to speed slightly lower for good.
Car charm in its motion, and dynamic soul in the engine,x431 tool develops today, already very perfect, it is difficult to imagine the lost engine days, cars can be what appearance. If you are interested in cars. So, please pay attention to our next column.