Vehicle state analysis system and its analysis method
First Claim
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1. A vehicle state analysis system for a vehicle including an engine, comprising:
- a sensor which detects an air-fuel ratio of the exhaust of the engine, and a processor which functions to;
compute a weight of fuel consumed by the engine based on an intake air amount and the air-fuel ratio of the engine, and compute a fuel consumption rate of the vehicle based on the computed weight of consumed fuel and the running distance of the vehicle.
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Abstract
A computing unit 3 of an analysis device 1 calculates a weight of fuel consumed by an engine 10 based on the weight of intake air and air fuel ratio of an engine of a vehicle to be analyzed detected by an air flow meter 14 and an air-fuel ratio sensor 16, and computes a fuel consumption rate based thereon and the running distance. The computation of fuel consumption rate does not require an injection pulse signal, so the fuel consumption rate can be precisely computed even for a vehicle which does not have an injection pulse signal such as a non-EGI vehicle or a diesel engine vehicle.
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Citations
22 Claims
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1. A vehicle state analysis system for a vehicle including an engine, comprising:
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a sensor which detects an air-fuel ratio of the exhaust of the engine, and a processor which functions to;
compute a weight of fuel consumed by the engine based on an intake air amount and the air-fuel ratio of the engine, and compute a fuel consumption rate of the vehicle based on the computed weight of consumed fuel and the running distance of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for analyzing the state of a vehicle including an engine, comprising:
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detecting an air-fuel ratio of the exhaust gas of the engine, computing a weight of fuel consumed by the engine based on an intake air amount and the air-fuel ratio of the engine, and computing a fuel consumption rate of the vehicle based on the computed weight of consumed fuel and running distance of the vehicle.
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Specification