Patent application number | Description | Published |
20100122522 | EXHAUST GAS PURIFICATION SYSTEM FOR ENGINEERING MACHINE - An exhaust gas purification system for an engineering machine is capable of avoiding decreases in working efficiency during regeneration control by burning off a deposit of particulate matter from a filter efficiently during a work pause time. An operating section | 05-20-2010 |
20100139255 | Construction Machine - [PROBLEM] To provide a construction machine capable of performing necessary operation or operations without a difficulty even when a remaining amount of a reducing agent becomes small. | 06-10-2010 |
20100212297 | Construction Machine - [Problem] To provide a construction machine capable of realizing with fewer components temperature control of a reducing agent in a reducing agent tank without arranging any heat exchanger in the reducing agent tank. | 08-26-2010 |
20100319321 | Engine Powered Machine - An engine powered machine is provided with an economical exhaust gas purification system capable of avoiding overheating. The engine powered machine is provided with an exhaust gas purification system that injects a reducing agent into an exhaust pipe of an engine by a reducing agent feeder to detoxify nitrogen oxides in exhaust gases. A cooling fan, the driving or stopping of which is controlled by a controller, is arranged as a cooling device for a reducing agent tank in which the reducing agent to be injected by the reducing agent feeder is stored. When a detected temperature signal output from a reducing agent temperature detector has become higher than a cooling initiation temperature stored in a storage unit, the controller drives the cooling fan to initiate cooling of the reducing agent tank. | 12-23-2010 |
20110113766 | Vehicular Back Processing System - An exhaust gas post-treatment system for a vehicle is provided, which in the course of regeneration ascertains whether or not there is any object approaching a body of the vehicle from behind. A filter is arranged in an exhaust passage of an engine to trap PM therein. A trapped and deposited PM amount sensing device senses a deposited amount of PM deposited in the filter. A fuel injector burns and removes PM deposited in the filter to conduct regeneration of the filter. A rearward monitoring camera monitors a scene rearward of a vehicle body. A display module displays monitoring information from the rearward monitoring camera, and a controller having a regeneration processing unit executes control processing to actuate the fuel injector and to perform regeneration. The controller includes a display continuation processing unit for executing control processing such that during the regeneration by the fuel injector, the monitoring information from the rearward monitoring camera is continuously displayed on a display screen of the display module. | 05-19-2011 |
20110219744 | Exhaust Gas Treatment Apparatus for Working Machine - An exhaust gas treatment apparatus for a working machine is provided to reliably prevent a specific process that raises the exhaust temperature of an exhaust gas treatment section from being carried out during switching operation of a directional control valve. The apparatus includes: a directional control valve that controls the flow of pressure oil supplied to an actuator; a pilot pump that supplies pressure oil to an operating device operated to switch the directional control valve; an open/close valve arranged downstream of the directional control valve; a control valve that controls the open/close valve; a lock valve arranged between the pilot pump and the operating device; a detecting section that detects when a specific process that raises the exhaust temperature of an exhaust gas treatment section becomes necessary, and outputs the corresponding detection signal; a controller that controls the control valve; and a pipe for performing a process of setting the open/close valve to an open position in accordance with the pilot pressure oil supplied from the pilot pump. | 09-15-2011 |
20120067660 | CONSTRUCTION MACHINE - A fuel tank ( | 03-22-2012 |
20120067661 | CONSTRUCTION MACHINE - A urea water tank ( | 03-22-2012 |
20120163996 | Hydraulic Drive Device of Hydraulic Operating Machine - A hydraulic drive system for a hydraulic working machine sets a delivery pressure at a preset value upon raising a temperature of exhaust gas to a temperature needed for combustion of particulate matter by increasing a load to be applied to an engine. In a non-operation state, a variable restrictor is controlled by a controller and a delivery pressure control valve to increase a delivery pressure of a variable displacement hydraulic pump, so that the load is increased to raise the temperature of exhaust gas to the temperature needed for the particulate matter combustion. At this time, the controller controls the delivery pressure control valve such that a delivery pressure to be detected by a delivery pressure sensor will conform with a preset reference delivery pressure. The reference delivery pressure is set to a minimum pressure that can provide the exhaust gas with combustion heat. | 06-28-2012 |
20120180459 | Exhaust Gas Purification System for Working Machine - Disclosed is an exhaust gas purification system for a working machine. The system is provided with a filter for capturing particulate matter contained in exhaust gas from an engine, a differential pressure sensor for detecting a differential pressure between an exhaust upstream side and an exhaust downstream side of the filter, and a controller having a regeneration determination unit for determining whether or not a time, at which forced regeneration is needed, has been reached. The controller includes one that has a variation determination unit for determining whether or not a state quantity relevant to an operation of the engine, for example, an engine speed has varied abruptly and that, when the state quantity is determined to have abruptly varied, performs processing to invalidate the determination by the regeneration determination unit during a predetermined time in which an effect of the state quantity is considered to diminish. | 07-19-2012 |
20120279203 | EXHAUST GAS PURIFICATION SYSTEM FOR HYDRAULIC OPERATING MACHINE - When an output value of an exhaust resistance sensor | 11-08-2012 |
20130174539 | Engine Control System for Construction Machine - Disclosed is an engine control system for a construction machine having an engine and a control device for controlling, via a directional control valve, a flow of pressure oil to be fed to a hydraulic actuator. The system is provided with a controller, which includes a manipulation state determination unit for the control device and an idle stop control unit for performing idle stop control when the control device is determined to have remained unmanipulated. The system also includes a temperature sensing device for a fluid relevant to the operation of the engine. The controller includes a unit for determining whether or not the temperature of the fluid is not higher than a predetermined temperature. When the temperature of the fluid is determined to be not higher than the predetermined temperature, the controller disables the idle stop control. | 07-11-2013 |
20140365101 | Industrial Machine - An object is to provide a working machine that enables to appropriately become aware of a time for drainage of water from a water separator without adding a new element into the water separator. A hydraulic excavator ( | 12-11-2014 |