Vehicle emission monitoring device and method thereof
First Claim
1. A vehicle emission monitoring device including instantaneous fuel consumption data and carbon dioxide emission data pre-stored in a memory device thereof from a non-dispersive infrared analyzer on-board emission measurement system (OBS), said vehicle emission monitoring device, comprising:
- an on-board diagnostic (OBD) connector connecting with an OBD system to receive an OBD instantaneous fuel consumption of said vehicle; and
a processor electrically connecting with said OBD connector and said memory device to receive information of vehicle statuses, said processor configured to;
determine;
(1) an OBS-OBD fuel consumption relationship; and
, (2) an OBS fuel consumption-carbon dioxide emission relationship from said instantaneous fuel consumption data and said carbon dioxide emission data pre-stored in said memory device from the OBS, said OBS-OBD fuel consumption relationship being determined by defining a distinct set of non-overlapping torque ranges and establishing a corresponding set of distinct equations assigned respectively thereto relating said instantaneous fuel consumption from the OBS to said OBD instantaneous fuel consumption per each corresponding non-overlapping torque range;
store said OBS-OBD fuel consumption relationship and said OBS fuel consumption-carbon dioxide emission relationship in said memory device;
obtain an OBD instantaneous fuel consumption;
selectively determine a calibrated value of said OBD instantaneous fuel consumption based on said OBS-OBD fuel consumption relationship; and
determine a carbon dioxide emission of said calibrated value as a function of an OBS-OBD fuel consumption-carbon dioxide emission relationship while decoupled from the on-board emission measurement system (OBS).
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Abstract
The present invention discloses a vehicle emission monitoring device and a method thereof. The method of the present invention comprises steps: obtaining an OBS instantaneous fuel consumption and a carbon dioxide emission from an on-board emission measurement system (OBS); working out an OBS fuel consumption-carbon dioxide emission relationship with a statistical method or a regression method; obtaining an OBD instantaneous fuel consumption from an on-board diagnostic (OBD) system; establishing an OBS-OBD fuel consumption relationship; and converting the OBD instantaneous fuel consumption into an carbon dioxide emission according to the OBS-OBD fuel consumption relationship and the OBS fuel consumption-carbon dioxide emission relationship.
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Citations
10 Claims
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1. A vehicle emission monitoring device including instantaneous fuel consumption data and carbon dioxide emission data pre-stored in a memory device thereof from a non-dispersive infrared analyzer on-board emission measurement system (OBS), said vehicle emission monitoring device, comprising:
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an on-board diagnostic (OBD) connector connecting with an OBD system to receive an OBD instantaneous fuel consumption of said vehicle; and a processor electrically connecting with said OBD connector and said memory device to receive information of vehicle statuses, said processor configured to; determine;
(1) an OBS-OBD fuel consumption relationship; and
, (2) an OBS fuel consumption-carbon dioxide emission relationship from said instantaneous fuel consumption data and said carbon dioxide emission data pre-stored in said memory device from the OBS, said OBS-OBD fuel consumption relationship being determined by defining a distinct set of non-overlapping torque ranges and establishing a corresponding set of distinct equations assigned respectively thereto relating said instantaneous fuel consumption from the OBS to said OBD instantaneous fuel consumption per each corresponding non-overlapping torque range;store said OBS-OBD fuel consumption relationship and said OBS fuel consumption-carbon dioxide emission relationship in said memory device; obtain an OBD instantaneous fuel consumption; selectively determine a calibrated value of said OBD instantaneous fuel consumption based on said OBS-OBD fuel consumption relationship; and determine a carbon dioxide emission of said calibrated value as a function of an OBS-OBD fuel consumption-carbon dioxide emission relationship while decoupled from the on-board emission measurement system (OBS). - View Dependent Claims (2, 3, 4, 9)
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5. A vehicle emission monitoring method comprising steps:
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using a non-dispersive infrared analyzer on-board emission measurement system (OBS) device to obtain instantaneous fuel consumption data and carbon dioxide emission data from said vehicle; storing the instantaneous fuel consumption data and carbon dioxide emission data in a memory device; maintaining the memory device operatively decoupled from the OBS device; using a processor to determine an OBS fuel consumption-carbon dioxide emission relationship based upon the carbon dioxide emission data with a statistical method or a regression method; obtaining an OBD instantaneous fuel consumption data from an on-board diagnostic (OBD) system; establishing an OBS-OBD fuel consumption relationship with said OBD instantaneous fuel consumption data being an independent variable and said OBS instantaneous fuel consumption data being a dependent variable, said OBS-OBD fuel consumption relationship being determined by defining a distinct set of non-overlapping torque ranges and establishing a corresponding set of distinct equations assigned respectively thereto relating said OBS fuel consumption to said OBD fuel consumption per each corresponding non-overlapping torque range; and converting said OBD instantaneous fuel consumption data into carbon dioxide emission data according to said OBS-OBD fuel consumption relationship and said OBS fuel consumption-carbon dioxide emission relationship while decoupled from the on-board emission measurement system (OBS). - View Dependent Claims (6, 7, 8, 10)
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Specification