Honda Fit 1.3 matches the engine from the structural point of view there is no bright spot, and even some backward - the design of each valve two valves, single overhead camshaft. But Honda has claimed that the technology of this engine is synchronized with the world, even more than it's 1.5-valve VTEC engine even advanced, which is why?
    Familiar with the degree of Fit know that Fit 1.3 this engine was Honda called i-DSI engine, the reason why advanced, that is, the i-DSI. What is this special i-DSI? Is not Honda engaged in gimmicks? From the parameters, 60 kilowatts of power is also nothing to boast, this engine is clearly not high-power output.
    From the Honda's propaganda point of view, i-DSI is a dual spark plug ignition, it can improve the combustion efficiency. In fact, this engine is the real core technology is "thin burning" technology, dual spark plug design is only to achieve this "thin burning" by the means used. This article, we will focus on the discussion of "thin burning" technology. The biggest feature of this technology is the high combustion efficiency, economic, environmental protection, but also can enhance the engine power output. Because in the lean combustion conditions, because the mixed air ignition than the theoretical air-fuel ratio conditions, the storm is also less prone to occur, so you can use a higher compression ratio design to improve the efficiency of thermal conversion, coupled with gasoline in excess Of the air burning, so in the support of these conditions can extract every drop of gasoline all the energy.
    Honda's i-DSI engine's lean burn technology
    Honda this engine is relatively rare outside the tank thin burning technology, although there is no direct injection of the cylinder, but compared to direct injection engine inexpensive.
    We first talk about what is called thin burning it. The so-called thin burning, is by increasing the air-fuel ratio of the mixture within the engine, so that the air-fuel ratio in the air-fuel ratio greater than the theoretical air-fuel ratio of the state of combustion. Speak straightforward, that is, let the gasoline in a very mixed state of burning. We know that the theoretical air-fuel ratio is a basic parameter of the engine, the general engine is not just to change the air-fuel ratio, and that if you want the engine to achieve lean combustion, you must have two conditions:
    First, thin burning technology requires a strong ignition energy. It is a good idea to understand that the proportion of gasoline in the mixture is small and the mixture is ignited to require more energy, and the i-DSI engine is designed to meet this requirement with a dual spark plug design.
    Second, thin burning technology requires air to be fully mixed with gasoline. The proportion of gasoline in the mixture is reduced, and the mixing of air and fuel is even higher. If the fuel can not be fully mixed with the air, when the spark plug ignition, encountered mixed with less gas in the mixture of less part of the ignition will be more difficult. Honda to the engine with a traditional 2-valve design, because the 2-valve engine in the mixture into the cylinder after a strong vortex, so that gasoline and air have more opportunities for mixing.
    I-DSI engine is through these means to solve the basic needs of thin burning, to achieve lean combustion. Since the i-DSI was developed on the basis of an ordinary cylinder fuel injection engine, it was more fuel economy and less helpful for power output. The i-DSI engine burns less gasoline by burning the "leaner mixture" to achieve the same power output. In other words, let the gasoline can be more fully burned, as much as possible so that all the gasoline have become a power to release, thereby reducing fuel consumption. Honda's propaganda can also be seen, for Fit 1.3, it has been declared to be able to achieve the same level of engine fuel consumption in the lowest (without propaganda power output).