Increasing braking power and exhaust gas temperature
AssigneeCaterpillar Inc.
InventorsWade James Robel, Spencer Landon Huhn, Kevin Weiss, John Robert McDonald, Jason Kenneth Bloms
Life of this patent
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Abstract
A controller may identify an indication to initiate an engine braking procedure associated with an engine of a machine. The controller may obtain, based on identifying the indication to initiate the engine braking procedure, information relating to a requested amount of engine braking power of the engine. The controller may cause one or more components of a variable geometry turbocharger (VGT) of the engine to adjust, and a throttle valve of the engine to adjust, based on the information relating to the requested amount of engine braking power of the engine.
Claims20
A method, comprising:
- identifying, by a controller, an indication to initiate an engine braking procedure associated with an engine of a machine;
- obtaining, by the controller and based on identifying the indication to initiate the engine braking procedure, information relating to a requested amount of engine braking power of the engine;
- and
- causing, by the controller, one or more components of a variable geometry turbocharger (VGT) of the engine to adjust, and a throttle valve of the engine to adjust, based on the information relating to the requested amount of engine braking power of the engine and based on an exhaust gas temperature threshold that is associated with a minimum operating temperature of an exhaust aftertreatment device.
A controller, comprising:
- one or more memories;
- and
- one or more processors, communicatively coupled to the one or more memories, configured to:
- identify an indication to initiate an engine braking procedure associated with a machine;
- determine, after identifying the engine braking procedure, an exhaust gas temperature associated with the machine;
- determine, after identifying the engine braking procedure, a requested amount of engine braking power;
- and
- cause one or more components of a variable geometry turbocharger (VGT) to adjust and a throttle valve to adjust based on the exhaust gas temperature.
A system comprising:
- an engine;
- a variable geometry turbocharger (VGT) that includes adjustable vanes;
- a throttle valve;
- a sensor system;
- and
- a controller configured to:
- receive, from the sensor system, an indication to initiate an engine braking procedure associated with the engine;
- receive, from the sensor system and after receiving the indication to initiate the engine braking procedure, information concerning an exhaust gas temperature of the engine and information concerning a requested amount of engine braking power of the engine;
- and
- cause the adjustable vanes of the VGT to adjust and the throttle valve to adjust based on at least the information concerning the exhaust gas temperature in comparison to a predetermined exhaust gas temperature threshold.
Dependencies are inferred from the claim text.