Fuel Consumption Evaluation System
First Claim
1. A fuel consumption evaluation system comprising:
- engine speed measuring means which measures engine speed of a truck;
accelerator opening degree measuring means which measures an accelerator opening degree;
vehicle velocity measuring means which measures vehicle velocity;
fuel flow rate measuring means which measures a fuel flow rate; and
control means which evaluates fuel consumption of the truck from measured engine speed, accelerator opening degree, vehicle velocity and fuel flow rate, characterized in that the control means;
has storage means, divides a run from start to stop into a plurality of phases, sets fuel consumption-related parameters for each of the plural phases, determines fuel consumption for each of the plural phases based on correlation between the parameters and fuel consumption, and makes an evaluation based on the determined fuel consumption.
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Accused Products
Abstract
The present invention is intended to provide a fuel consumption evaluation system which obtains quantitative data to determine whether actual driving has consumed fuel more efficiently or less efficiently than average driving and gives the driver and/or manager concrete advice for fuel-efficient driving based on the obtained data, and also provide a fuel consumption evaluation system which decides, based on obtained fuel efficiency data, whether driving is more fuel-efficient than average driving and sets a target and gives the driver and/or manager concrete advice for fuel-efficient driving based on the obtained data in consideration of change in vehicle total mass without any influence of slopes and traffic flows and particularly encourages and instructs, in real time, the driver to do fuel-efficient driving. The system comprises: engine speed measuring means (2) which measures engine speed of a truck (1); accelerator opening degree measuring means (3) which measures an accelerator opening degree (α); vehicle velocity measuring means (4) which measures vehicle velocity (V); fuel flow rate measuring means (5) which measures a fuel flow rate (Fw); and control means (10) which evaluates fuel consumption of the truck from measured engine speed (N), accelerator opening degree (α), vehicle velocity (V) and fuel flow rate (Fw). The control means, which has storage means (11), divides a run from start to stop into plural phases (start acceleration phase E1, steady running phase E2, deceleration phase E3, idling phase E4), sets fuel consumption-related parameters (“start acceleration shift-up engine speed N1 and start acceleration accelerator opening degree α1” P1, “steady running engine speed N2” P2, “deceleration coasting ratio” P3 and “idling velocity V4” P4) for each of the plural phases (E1-E4, determines fuel consumption (Q) for each of the plural phases (E1-E4) based on correlation (correlation line F in FIG. 5) between the parameters (P1, P2, P4) and fuel consumption (fuel consumption per unit distance traveled q), and makes an evaluation based on the determined fuel consumption (Q).
84 Citations
25 Claims
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1. A fuel consumption evaluation system comprising:
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engine speed measuring means which measures engine speed of a truck;
accelerator opening degree measuring means which measures an accelerator opening degree;
vehicle velocity measuring means which measures vehicle velocity;
fuel flow rate measuring means which measures a fuel flow rate; and
control means which evaluates fuel consumption of the truck from measured engine speed, accelerator opening degree, vehicle velocity and fuel flow rate, characterized in that the control means;
has storage means, divides a run from start to stop into a plurality of phases, sets fuel consumption-related parameters for each of the plural phases, determines fuel consumption for each of the plural phases based on correlation between the parameters and fuel consumption, and makes an evaluation based on the determined fuel consumption. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fuel consumption evaluation system comprising:
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engine speed measuring means which measures engine speed of a vehicle;
accelerator opening degree measuring means which measures an accelerator opening degree;
vehicle velocity measuring means which measures vehicle velocity;
fuel flow rate measuring means which measures a fuel flow rate;
engine load measuring means which measures engine load; and
control means which calculates fuel consumption of the vehicle and vehicle mass from measured engine speed, accelerator opening degree, vehicle velocity, fuel flow rate and engine load, characterized in that the control means;
has storage means, divides a run from start to stop into a plurality of phases, sets fuel consumption-related parameters for each of the plural phases, calculates fuel consumption rate for actual driving against average driving and fuel consumption rate for target driving against average driving based on correlation between the parameters and fuel consumption rate against average driving, and makes an evaluation based on the calculated fuel consumption rates. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A fuel consumption evaluation system comprising:
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engine speed measuring means which measures engine speed of a vehicle;
accelerator opening degree measuring means which measures an accelerator opening degree;
vehicle velocity measuring means which measures vehicle velocity;
fuel flow rate measuring means which measures a fuel flow rate;
engine load measuring means which measures engine load; and
storage means which stores data on measured engine speed, accelerator opening degree, vehicle velocity, fuel flow rate and engine load;
control means which calculates fuel consumption of the vehicle and vehicle mass from the various data; and
display means which is installed in the vehicle, characterized in that the control means;
divides a run from start to stop into a plurality of phases, sets fuel consumption-related parameters for each of the plural phases, calculates fuel consumption rate for actual driving against average driving and fuel consumption rate for target driving against average driving based on correlation between the parameters and fuel consumption rates against average driving, makes an evaluation based on the calculated fuel consumption rates, and displays the evaluation result on the display means. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification