Patents by Inventor Bert Ritscher
Bert Ritscher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9599040Abstract: A method for controlling fuel flow in a multi fuel engine is disclosed. An input power for operating the multi fuel engine at a desired engine speed is determined and a fuel flow rate based on the input power, one or more fuel properties and a specified fuel substitution ratio for apportioning the plurality of fuels is determined. Also, a correction factor for the fuel flow rate based on a desired charge density, wherein the desired charge density is based at least on a relationship between an engine load and charge density is determined and a corrected fuel flow rate, based on the determined correction factor, is output to a corresponding actuator of a fluid flow control device for the one of the fuels to cause the corresponding actuator to provide the one of the plurality of fuels at the corrected fuel flow rate.Type: GrantFiled: May 28, 2014Date of Patent: March 21, 2017Assignee: Caterpillar Motoren GmbH & Co. KGInventors: Arvind Sivasubramanian, Christopher F. Gallmeyer, Eike J. Sixel, Bert Ritscher
-
Publication number: 20150345408Abstract: A method for controlling fuel flow in a multi fuel engine is disclosed. An input power for operating the multi fuel engine at a desired engine speed is determined and a fuel flow rate based on the input power, one or more fuel properties and a specified fuel substitution ratio for apportioning the plurality of fuels is determined. Also, a correction factor for the fuel flow rate based on a desired charge density, wherein the desired charge density is based at least on a relationship between an engine load and charge density is determined and a corrected fuel flow rate, based on the determined correction factor, is output to a corresponding actuator of a fluid flow control device for the one of the fuels to cause the corresponding actuator to provide the one of the plurality of fuels at the corrected fuel flow rate.Type: ApplicationFiled: May 28, 2014Publication date: December 3, 2015Applicant: Caterpillar Motoren GmbH & Co.KGInventors: Arvind Sivasubramanian, Christopher F. Gallmeyer, Eike J. Sixel, Bert Ritscher
-
Patent number: 9175614Abstract: The present disclosure refers to a gas fuel admission system for a gas fired engine. A gas pressure regulating unit includes a gas pressure regulating unit inlet and a gas pressure regulating unit outlet. The gas pressure regulating unit is configured to receive gas and to discharge the gas at an injection pressure. An engine gas inlet is configured to direct gas into the at least one combustion chamber. A gas admission valve is configured to admit the gas having an injection pressure at a predetermined time for a predetermined duration into the engine gas inlet. A gas pressure relief device is fluidly connected to the gas conduit and it is configured to relieve overpressure of the gas in the gas supply conduit, if a pressure differential between the injection gas pressure and the intake air pressure is above a predetermined threshold. A specific engine control module is configured to control the gas admission valve in response to inputs from various sensing devices.Type: GrantFiled: October 12, 2010Date of Patent: November 3, 2015Assignee: Caterpillar Motoren GmbH & Co. KGInventors: Wolfgang Hoefer, Manfred Meissner, Bert Ritscher
-
Publication number: 20150241306Abstract: A method of detecting an incomplete combustion, such as a misfire, in an internal combustion engine operating at least partly on a gaseous fuel, includes: receiving pressure data corresponding to a temporal development of a cylinder pressure during a combustion event within a combustion cycle; deriving from the pressure data a combustion energy value of the combustion; determining that the derived combustion energy value is beyond a predetermined combustion-cycle specific combustion threshold level; and associating the combustion event with an incomplete combustion in the combustion cycle.Type: ApplicationFiled: February 19, 2015Publication date: August 27, 2015Applicant: CATERPILLAR MOTOREN GMBH & CO. KGInventors: Eike Joachim SIXEL, Bert RITSCHER, Hendrik HEROLD, Andre SCHMIDT, Stefan HAAS, Arvind SIVASUBRAMANIAN
-
Publication number: 20150034042Abstract: Control systems comprising electronic control modules (104, 106) may be configured to control operation of a dual fuel internal combustion engine (1). In case of a failure of an electronic control module (104, 106), the dual fuel internal combustion engine (1) may interrupt operation. The disclosed control system and method may maintain operation of the dual fuel internal combustion engine (1) when a malfunction within an operation mode of the dual fuel internal combustion engine (1), particularly when an electronic control module (104, 106) fails, is detected.Type: ApplicationFiled: February 26, 2013Publication date: February 5, 2015Applicant: CATERPILLAR MOTOREN GMBH & CO. KGInventors: Bert Ritscher, Rodney Stazicker
-
Publication number: 20130226438Abstract: A method for controlling an injection process of an engine that is configured to operate with multiple types of fuels is disclosed. The method may comprise the steps of receiving a fuel amount request indicating a requested amount of fuel to be delivered, receiving at least one physical parameter indicating the type of fuel provided to operate the engine, providing a map comprising a control parameter in dependence of the physical parameter, reading the control parameter associated with the received physical parameter, determining an injection parameter for the injection process based on the control parameter and the requested amount of fuel, and operating the engine based on the injection parameter.Type: ApplicationFiled: August 24, 2011Publication date: August 29, 2013Applicant: CATERPILLAR MOTOREN GMBH & CO. KGInventors: Alan Schroeder, Bert Ritscher
-
Patent number: 8307810Abstract: A fuel injection system supplies fuel at high pressure to an internal combustion engine via at least two high-pressure fuel pumps and a high-pressure fuel distribution line. The high-pressure fuel pumps can operate in a first pump mode and a second pump mode, which differ in the amount of fuel that is pumped. A control unit alternately operates the high-pressure fuel pumps such that, during a first time period, at least one of the high-pressure fuel pumps is operated in the first pump mode and all other high-pressure fuel pumps are simultaneously operated in the second pump mode and such that, during a second time period, at least one of the high-pressure fuel pumps, which was operated in the second pump mode during the first time period, is operated in the first pump mode and the remaining high-pressure fuel pumps are simultaneously operated in the second pump mode.Type: GrantFiled: November 28, 2008Date of Patent: November 13, 2012Assignees: Caterpillar Motoren GmbH & Co. KG, L'Orange GmbHInventors: Stefan Haas, Bert Ritscher, Bodo Gneist, Horst Ressel, Wolfgang Scheibe, Jürgen Schick
-
Publication number: 20120199102Abstract: The present disclosure refers to a gas fuel admission system for a gas fired engine. A gas pressure regulating unit includes a gas pressure regulating unit inlet and a gas pressure regulating unit outlet. The gas pressure regulating unit is configured to receive gas and to discharge the gas at an injection pressure. An engine gas inlet is configured to direct gas into the at least one combustion chamber. A gas admission valve is configured to admit the gas having an injection pressure at a predetermined time for a predetermined duration into the engine gas inlet. A gas pressure relief device is fluidly connected to the gas conduit and it is configured to relieve overpressure of the gas in the gas supply conduit, if a pressure differential between the injection gas pressure and the intake air pressure is above a predetermined threshold. A specific engine control module is configured to control the gas admission valve in response to inputs from various sensing devices.Type: ApplicationFiled: October 12, 2010Publication date: August 9, 2012Inventors: Wolfgang Hoefer, Manfred Meissner, Bert Ritscher
-
Publication number: 20110023830Abstract: A fuel injection system supplies fuel at high pressure to an internal combustion engine via at least two high-pressure fuel pumps and a high-pressure fuel distribution line. The high-pressure fuel pumps can operate in a first pump mode and a second pump mode, which differ in the amount of fuel that is pumped. A control unit alternately operates the high-pressure fuel pumps such that, during a first time period, at least one of the high-pressure fuel pumps is operated in the first pump mode and all other high-pressure fuel pumps are simultaneously operated in the second pump mode and such that, during a second time period, at least one of the high-pressure fuel pumps, which was operated in the second pump mode during the first time period, is operated in the first pump mode and the remaining high-pressure fuel pumps are simultaneously operated in the second pump mode.Type: ApplicationFiled: November 28, 2008Publication date: February 3, 2011Applicants: CATERPILLAR MOTOREN GMBH & CO. KG, L'Orange GmbHInventors: Stefan Haas, Bert Ritscher, Bodo Gneist, Horst Ressel, Wolfgang Scheibe, Jürgen Schick
-
Patent number: 7591258Abstract: The present disclosure provides a control strategy for balancing injector-to-injector fueling variations for a combustion engine having multiple combustion chambers (and cylinders), with multiple individually actuated injectors for injecting fuel into the combustion chambers, wherein at least one injector is assigned to each combustion chamber and a common rail supplies fuel to the multiple injectors. The method includes changing the actuation waveform of an injector assigned to a combustion chamber having an exhaust gas temperature deviating by more than the predetermined value from the average exhaust gas temperature, in order to change the amount of fuel injected.Type: GrantFiled: June 13, 2007Date of Patent: September 22, 2009Assignee: Caterpillar Motoren GmbH & Co. KGInventors: Juergen Nagel, Bert Ritscher, Alan R. Schroeder
-
Publication number: 20070289584Abstract: In order to improve the performance of a common rail engine and reduce the number of false alarms by the exhaust gas temperature monitoring system, the present disclosure provides a control strategy for balancing injector-to-injector fueling variations for a combustion engine having multiple combustion chambers (and cylinders), with multiple individually actuated injectors for injecting fuel into the combustion chambers, wherein at least one injector is assigned to each combustion chamber and a common rail supplies fuel to the multiple injectors.Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Inventors: Juergen Nagel, Bert Ritscher, Alan R. Schroeder