PRODUCTS
Fuel Injection System
Fuel Injection System
A fuel injection control system is used to optimize fuel efficiency and reduce emissions. The invention uses more than one fuel injection system, with a flexible means for injection fuel into the combustion chamber of an engine at more than one time, and usually by using an electronic control device for receiving and interpreting engine sensor signals indicative of fuel consumption, to generate and direct fuel injection commands to change the fuel injection timing and/or frequency in response to an undesired deviation from a previously selected running mode, such as excessive intake of fuel at low load conditions. The electronic control device is usually mounted in a fuel tank adjacent to the engine or on the chassis, although some designs are mounted in the engine compartment outside the engine. Fuel injection systems can also be directly attached to engines using fuel lines.
ECU 14 is the Automotive Ecu-System (ACE) symbol representing electrical control. ACE stands for Electronic control unit. It controls the operations of the fuel injection control system. The ECU controls the opening and closing of the fuel injection pump, the timing of opening and closing of the fuel valve, the flow of fuel into the fuel system, the atmospheric pressure, the ignition timing, the idle speed, the idle drift, etc. The main function of the ECU is to compensate the operating parameters caused by changes in the engine's parameters.
The operation of the fuel injection control system is not complete without the support of a computer. It calculates the fuel consumption needed by the engine, based on the estimated fuel burnout. The calculation of fuel consumption allows the ECU to decide if any one of the parameters needs to be controlled, such as the idle speed, the pressure, fuel temperature, or the airflow. If the estimated fuel burnout is less than desired, then the engine has to idle in the least possible manner to prevent overshoot of the predicted fuel consumption.
The operation of the fuel injection control system can be seen on a part of the car known as the fuel injection valve. This part connects the eye to the fuel injection control system. It starts up the fuel injection valve, which opens and closes the fuel injection valve according to the changing operating conditions. The operating conditions are usually indicated by a fuel injection control valve's color, such as green, red, yellow, orange, or purple.
A two cycle crankcase compression internal combustion engine runs with a one-stage motor. When the two-stage motor detects an overshoot in its output, it will automatically detect the source of the increase and will shut off the fuel injection control system. However, under normal driving conditions, there is only one sensor in the fuel injection control system. This sensor continuously monitors the engine running conditions. The fuel injection control system shuts-off the motor if the measured value exceeds a pre-determined threshold value. If the sensor detects that the engine is exceeding the predicted fuel consumption by more than 10% then it will automatically detect the source of the overshoot and also shut-off the fuel injection control system.
An important component is the speed sensor. This speed sensor allows the ecu to calculate the fuel consumption based on the vehicle's speed. The ecu uses a bipolar voltage-velocity control to determine the fuel flow into the fuel tank at different speeds. If the speed sensor's range is too small, the ECU will use a constant voltage and velocity signal. On the other hand, a larger speed sensor has a smaller range that causes the ecu to generate more signals for the fuel pump and thus cause the ecu to generate more fuel for the car.
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