Condition-sensitive exhaust control
First Claim
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1. An exhaust control system for a vehicle having an engine and an exhaust system, comprising:
- an exhaust controller configured to determine an acceptable range for an exhaust parameter responsive to an ambient condition and to direct the exhaust system to maintain the exhaust parameter within the acceptable range,wherein the exhaust parameter is selected from the group consisting of exhaust gas temperature, exhaust gas temperature profile, exhaust gas composition, exhaust gas back pressure, catalytic converter reactive area, exhaust gas flow path, catalyst selection, sequestration of at least one exhaust gas component, exhaust gas flow rate, exhaust particulates density, exhaust particulate composition, exhaust particulate size, concentration of exhaust components at a selected location in an exhaust flow path, coolant temperature, and inlet-exhaust thermal coupling.
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Abstract
A method and exhaust control system for controlling a vehicle, including adjusting a vehicle parameter in response to a determined ambient condition or to local time.
58 Citations
30 Claims
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1. An exhaust control system for a vehicle having an engine and an exhaust system, comprising:
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an exhaust controller configured to determine an acceptable range for an exhaust parameter responsive to an ambient condition and to direct the exhaust system to maintain the exhaust parameter within the acceptable range, wherein the exhaust parameter is selected from the group consisting of exhaust gas temperature, exhaust gas temperature profile, exhaust gas composition, exhaust gas back pressure, catalytic converter reactive area, exhaust gas flow path, catalyst selection, sequestration of at least one exhaust gas component, exhaust gas flow rate, exhaust particulates density, exhaust particulate composition, exhaust particulate size, concentration of exhaust components at a selected location in an exhaust flow path, coolant temperature, and inlet-exhaust thermal coupling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A vehicle control system for a vehicle having an engine and an exhaust system, comprising:
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an exhaust controller configured to determine an acceptable range for a vehicle parameter for a selected local time period and to direct the vehicle to maintain the vehicle parameter within the acceptable range during the selected local time period, wherein the vehicle parameter is selected from the group consisting of compression ratio, timing of commencement of fuel combustion, timing of fuel injection, timing of fuel introduction into an air-inlet stream, valve timing, fuel composition, fuel-oxidizer ratio, air inlet temperature, air inlet pressure, number of operating cylinders, battery usage, battery charge, engine or drive-train usage of electrical energy, engine operating rate, output torque, exhaust gas temperature, exhaust gas temperature profile, exhaust gas composition, exhaust gas back pressure, catalytic converter reactive area, exhaust gas flow path, catalyst selection, sequestration of at least one exhaust gas component, exhaust gas flow rate, exhaust particulates density, exhaust particulate composition, exhaust particulate size, concentration of exhaust components at a selected location in an exhaust flow path, coolant temperature, and inlet-exhaust thermal coupling. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A method of controlling an exhaust system in a vehicle, comprising:
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determining an ambient condition; and responsive to the determined ambient condition, adjusting an exhaust parameter of the exhaust system, the exhaust parameter selected from the group consisting of exhaust gas temperature, exhaust gas temperature profile, exhaust gas composition, exhaust gas back pressure, catalytic converter reactive area, exhaust gas flow path, catalyst selection, sequestration of at least one exhaust gas component, exhaust gas flow rate, exhaust particulates density, exhaust particulate composition, exhaust particulate size, concentration of exhaust components at a selected location in an exhaust flow path, coolant temperature, and inlet-exhaust thermal coupling. - View Dependent Claims (25, 26, 27)
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28. A method of controlling a vehicle, comprising:
responsive to a local time, adjusting a vehicle parameter of the vehicle, the vehicle parameter selected from the group consisting of compression ratio, timing of commencement of fuel combustion, timing of fuel injection, timing of fuel introduction into an air-inlet stream, valve timing, fuel composition, fuel-oxidizer ratio, air inlet temperature, air inlet pressure, number of operating cylinders, battery usage, battery charge, engine or drive-train usage of electrical energy, engine operating rate, output torque, exhaust gas temperature, exhaust gas temperature profile, exhaust gas composition, exhaust gas back pressure, catalytic converter reactive area, exhaust gas flow path, catalyst selection, sequestration of at least one exhaust gas component, exhaust gas flow rate, exhaust particulates density, exhaust particulate composition, exhaust particulate size, concentration of exhaust components at a selected location in an exhaust flow path, coolant temperature, and inlet-exhaust thermal coupling. - View Dependent Claims (29, 30)
Specification