SANY HEAVY MACHINERY LIMITED Patent applications |
Patent application number | Title | Published |
20150303852 | THE ENGINE-DRIVEN GENERATOR ROTATIONAL SPEED CONTROL METHOD - This present invention discloses an engine-driven generator rotational speed control method. The method comprises the following steps, obtaining n-IA1 curve, n-IA2 curve, n-DCLV curve and DCLV-n curve through the generator open-loop characteristic curve; determining whether the current work area of the generator is the saturation area, the transition area or the linear area, and meanwhile determining the 1.1-times DCLV work area. The present invention adjusts the generator objective rotational speed by determining the state of the generator, and outputs the generator objective rotation rotational speed by the method of dynamic discrete, so as to ensure the responsiveness of the DC output voltage of the generator, to extend the service life of the generator, and to make the generator work in a more efficient state. | 10-22-2015 |
20150082876 | EXCAVATOR SELF-DETECTION SYSTEM AND METHOD - An excavator self-detection system comprises a controller, a fuel inlet flow meter, a fuel outlet flow meter and a performance self-detection controller. The fuel inlet flow meter and the fuel outlet flow meter are deployed at a fuel inlet and a fuel outlet of an engine respectively, and are connected to the performance self-detection controller. The performance self-detection controller is connected to the controller. The performance self-detection controller reads the signal values of the fuel inlet flow meter and the fuel outlet flow meter, calculates a fuel consumption value, and reads a machine parameter of the excavator through the controller to determine the performance. A detection method is also provided which uses the above excavator self-detection system. The method comprises performance self-detection, a fuel consumption test, and an efficiency test. The measuring equipment can be set by itself according to different machine types and different communication protocols. The detection device of the present invention aims to the different excavators with different communication protocols setting, therefore it owns strong portability. The condition of people waste is effectively reduced, and by means of the self-detection function, the measurement precision is improved. | 03-26-2015 |