In the two-wheeler or motorcycle, in charge of setting up the appliance
burning gas or a mixture of air and fuel is the carburetor. While the petrol injection system we call the motor or motors with carburetors injection task. In
other words, the supplier of the mixture of air and fuel to the motor
there are 2 kinds can use the injection system or carburetor. But keep in mind that the carburetor with fuel injection system has a working principle which is completely different. Arguably carburetor technology obsolete while gasoline injection applied to the motor current state of the art. Why should wear injection? Since end-kahir these emissions demands on the motor should be clean and efficient fuel. And these demands can no longer be met only by relying on the carburetor. Now,
to meet the demands before the system supplier to the motor fuel
injection models have replaced the motor alias last injection. For
injection engine equipped computer (electronic control unit / ECU),
which can guarantee the fuel and air ratio is always accurate in every
round machine. Here is an equation between the duty on motor fuel injection system with a carburetor models: 1. Equally adjust the volume of air entering the cylinders suitable gas valve opening angle (throttle valve) and the engine speed. 2. Equally channeling the proper combustion gases into the cylinder in accordance with the volume of incoming air. Since the discovery of the first time, petrol injection system has undergone several improvements. Overall divided into three types, namely mechanical, mechanical-electronic and electronic. But if seen from how to detect incoming air can be categorized into two types. That is the type of manifold absolute pressure (MAP) and the type of air flow meter (AFM). In the mechanical type, injector open continuously at a certain gas pressure, is not equipped with electrical sensors and ECU. While the mechanical injection system that uses electronic control unit in the category of mechanical-electronic. Then an electronic type of electromagnetic injector opening set by electronic control unit or ECU. Modern injection systems already use this type. Type MAP and AFM categorized electronic injection system. Both are differences in measurement methods of air into the cylinder. This makes the construction of the components are also different air gauge. Type MAP to measure vacuum in the intake manifold and the volumes are censored by the density of air. This type is often called D-Jetronic. In German, the "D" stands for "drunk" meaning pressure. And Jetronic is a designation created by the means Bosche injection. MAP type often called L-Jetronic. In German, the "L" stands for "luft" means air. Because this type uses water flow meter (weighing air) directly censor the amount of air flowing into the intake manifold. In its development, water flow meter itself many kinds. For example, AFM mechanical type, hot wire, optical karman vortex and others. Various injection system: 1. Mechanical type 2. Mechanical-electronic type 3. Electronic type electronic type is further divided into: 1. Type D-Jetronic 2. Type L-Jetronic
