Patent application number | Description | Published |
20110112742 | METHOD FOR THE CONTROL OF A SWITCHABLE WATER PUMP IN AN INTERNAL COMBUSTION ENGINE - A method is provided for the control of a switchable water pump for a water cooling circuit in an internal combustion engine. The method includes, but is not limited to monitoring a parameter representative of the cylinder head temperature and, in case the temperature is below a predetermined value, perform at least an on-off cycle for the switchable water pump. The on-off cycle, includes, but is not limited to at least a first phase in which the water pump is switched OFF for a time period T | 05-12-2011 |
20110209682 | CONTROL SYSTEMS FOR A VARIABLE CAPACITY ENGINE OIL PUMP - An oil circulating control system for an engine includes an engine speed module and a mode selection module. The engine speed module determines a speed of the engine. The mode selection module is configured to select a first pressure mode and a second pressure mode of an oil pump of the engine for the speed. The selection module selects one of the first pressure mode and the second pressure mode based on at least one mode request signal. The mode selection module signals a solenoid valve of a variable oil pressure circuit of the oil pump to transition to a first position when operating in the first pressure mode and to a second position when operating in the second pressure mode. | 09-01-2011 |
20110224883 | METHOD TO DIAGNOSE A FAILURE OF AN OPCJ VALVE OF AN INTERNAL COMBUSTION ENGINE - A method is provided to diagnose a failure of an OPCJ valve of an internal combustion engine. The OPCJ valve is located in an auxiliary line connecting an engine lubrication line to at least an oil jet for squirting lubricating oil from the engine lubrication line towards a piston surface. The method provides for monitoring the pressure variation in the engine lubrication line due to a switching signal sent to the OPCJ valve. | 09-15-2011 |
20110276249 | METHOD TO OPERATE AN ELECTRICALLY DRIVEN OPCJ VALVE OF AN INTERNAL COMBUSTION ENGINE - A method is provided to operate an electrically driven OPCJ valve of an internal combustion engine that includes, but is not limited to cyclically performing a control method able to generate an opening request for the OPCJ valve, of opening (which includes, but is not limited to keeping opened the OPCJ valve), when the control method generates an opening request, and of closing (which includes, but is not limited to or keeping closed the OPCJ valve), when the control method does not generate an opening request. The control method comprises the steps of determining a value of a control parameter related to an engine torque, and of generating an opening request for the OPCJ valve, if the control parameter value exceeds a threshold value of the control parameter. | 11-10-2011 |
20120180454 | METHOD FOR CONTROLLING THE REGENERATION PROCESS IN LNT DEVICES - A method is provided for controlling the regeneration process of a LNT device for the treatment of exhaust produced by an internal combustion engine. The method includes, but is not limited to storing a plurality of parameters in the form of preset values which relate to admissible regenerating conditions, receiving a regeneration request, measuring the current values of the parameters to define the current operating conditions of the engine and the LNT device, comparing the current values with the preset values of a corresponding parameter to evaluate if the current operating conditions of the engine and of the LNT device satisfy the admissible regenerating conditions for carrying out the regeneration process, and inhibiting the regeneration process if at least one current value of a corresponding parameter does not satisfy the admissible regenerating conditions for carrying out the regeneration process. | 07-19-2012 |
20120185153 | METHOD FOR MANAGING THE TRANSITION BETWEEN TWO COMBUSTION MODES IN AN INTERNAL COMBUSTION ENGINE - A method is disclosed for managing the transition between a lean combustion mode and a rich combustion mode, or vice versa. After a regeneration demand, or at the end of the regeneration phase, the air mass flow is modified from a first set point to a new set point within a predetermined time depending on the engine conditions. An air mass percentage value is cyclically calculated and compared with a target value. When the target value is reached, the fuel path is then suddenly switched to compensate the torque change due to different combustion modes and to achieve the desired rich or lean condition. | 07-19-2012 |
20140283502 | METHOD OF CONTROLLING AN EXHAUST GAS TEMPERATURE OF AN INTERNAL COMBUSTION ENGINE - A method of controlling an exhaust gas temperature at a particulate filter inlet is disclosed. The particulate filter is located in an exhaust system of an internal combustion engine. The method of controlling exhaust gas temperature at the particulate filter inlet includes a late injection, whose quantity is estimated as function of an exhaust gas volumetric flowrate. | 09-25-2014 |
20150218988 | AFTERTREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINES - An aftertreatment system of an internal combustion engine is disclosed. The aftertreatment system includes in a sequence along the exhaust pipe, a lean NOx trap and a particulate filter. An air/fuel ratio sensor is located upstream of the lean NOx trap and downstream of the turbine outlet to determine the air/fuel ratio during a regeneration process (DeNOx) in the lean NOx trap. A NOx sensor is located downstream of the lean NOx trap or downstream of the particulate filter, to determine NOx in the exhaust pipe. A turbine temperature is determined in accordance with a first means, and a temperature during a desulphation process (DeSOx) in the lean NOx trap is determined in accordance with a second means. At least one of the first and second means for determining a temperature may be a temperature sensor. | 08-06-2015 |