Abstract:
A method of controlling combustion of a diesel engine may include a vibration measuring step of measuring engine vibrations, a measurement region setting step of setting a range where an LPP (location of peak pressure) is predicted from measured vibration data, a frequency transforming step of transforming a vibration signal to a frequency response function, a frequency integrating step of integrating the transformed frequency response function, an LPP detecting step of selecting a location of peak pressure from integrated frequency response function, an estimated value determining step of selecting LPP offset and SOC (start of combustion) offset by using the detected LPP, an error determining step of determining LPP value error and SOC value error by comparing the estimated LPP value and the estimated SOC value with a target LPP value and a target SOC value, and a combustion correcting step of correcting and controlling combustion by the determined errors.
Abstract:
A hybrid power train for vehicles uses a double clutch transmission (DCT) to further improve the fuel efficiency of a vehicle, obtain a sporty transmission, and prevent the entire length thereof from being excessively lengthened, thereby sufficiently securing the ability of being mounted in a vehicle.
Abstract:
A push notification server operates on a client device to manage push notifications that the client device receives from various push servers. In some embodiments, the push notification server may receive a notification message on behalf of an application and determine how to handle the notification message based on whether the application is operating on the client device. If the application is operating on the client device, the push notification server may deliver the notification message to the application. If the application is not operating on the client device, the push notification server may deregister the application from the push notification service, and/or display user information associated with the application in order to inform the user that the application is not operating.
Abstract:
Provided are a photovoltaic power generating apparatus and a method of manufacturing the apparatus. The photovoltaic power generating apparatus includes a substrate, a first backside electrode, a second backside electrode, and a separator. The first backside electrode is disposed on the substrate. The second backside electrode is disposed on the substrate and is spaced apart from the first backside electrode. The separator is disposed between the first backside electrode and the second backside electrode.
Abstract:
A push notification server operates on a client device to manage push notifications that the client device receives from various push servers. In some embodiments, the push notification server may receive a notification message on behalf of an application and determine how to handle the notification message based on whether the application is operating on the client device. If the application is operating on the client device, the push notification server may deliver the notification message to the application. If the application is not operating on the client device, the push notification server may deregister the application from the push notification service, and/or display user information associated with the application in order to inform the user that the application is not operating.
Abstract:
Disclosed herein is a preservation container having a container body and a lid assembly. The lid assembly includes an upper cover, a knob provided on a top of the upper cover and rotated by a user, a vertical moving unit coupled to the upper cover and moved up and down by a rotation of the knob, an intermediate cover detachably coupled to a bottom of the upper cover and having in a central portion thereof a hole through which the vertical moving unit is exposed to an outside, a lower cover coupled to the vertical moving unit, and a packing fitted into a groove which is formed in a top of the lower cover and sliding along a bottom of the intermediate cover to be in close contact with an inner surface of the container body, when the vertical moving unit moves up.
Abstract:
An upper frame for an excavator is provided to smoothly transmit the load and shock which is transmitted through a mounting portion of a working device during operation (e.g., a lifting operation mode), to an upper frame by integrally installing a bracket for mounting a fuel tank or the like on an upper plate of the upper frame. The upper frame includes a center frame having a bottom plate and a pair of side plates and vertically welded to the bottom plate, a left side frame welded to the side plate of the center frame, a right side frame welded to the side plate of the center frame, an upper plate placed in the front of the center frame for supporting a bracket for a working device, to which a boom is pivotally secured, and an extended member integrally extended from one end of the upper plate for supporting desired parts.
Abstract:
A printed circuit board (PCB) capable of decreasing wireless wide area network (WWAN) noise generated due to internal signal interference occurring in the PCB is disclosed. The PCB printed circuit board includes a first layer, a second layer, and at least one insulating layer formed between the first and second layers. The PCB board further includes a first signal line group disposed on the first layer while including a plurality of first signal lines each supplying a first signal, isolation patterns disposed on the first layer such that the isolation patterns are arranged between adjacent ones of the first signal lines, respectively, to prevent the adjacent first signal lines from interfering with each other, and a second signal line group disposed on the second layer while including a plurality of second signal lines each supplying a second signal different from the first signal. The second signal line group corresponds to the isolation patterns.
Abstract:
An optical laminate film, a backlight unit, and a liquid crystal display module, the optical laminate film including a multilayer film composed of multiple layers including at least two polymers having different refractive indexes, the multilayer film transmitting only a light component vibrating in a direction parallel to one transmittance axis while reflecting other light components; an embossed diffusing film laminated on one side of the multilayer film, the embossed diffusing film having roughness on a surface thereof; and a microlens film laminated on another side of the multilayer film, the microlens film having microlenses arranged on a surface thereof.
Abstract:
A reinforced upper frame for supporting a cabin of heavy construction equipment using a welding deformation preventing structure and a method of manufacturing the same are disclosed, in which even if a side frame is welded to a machined center frame, there is no thermal deformation around the machined portion. The reinforced upper frame includes a center frame having a lower plate machined to accommodate a swing ring gear, a lateral plate machined to accommodate an operation device, and a welding deformation preventing structure fixed to one side of the lower plate and lateral plate prior to welding, in which a part of the cabin is mounted on the welding deformation preventing structure, and left and right frames each having a side channel disposed in a longitudinal direction of the center frame and a side frame welded to the structure for connecting the side channel and the center frame.