Hybrid Vehicle Eco Zone Torque Diagnostic Display
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Solution Overview
Problem
Conventional techniques fail to provide an absolute and fair determination of fuel consumption, making it difficult for drivers to assess their fuel-saving driving effectively, as they lack criteria for evaluating driving conditions and balancing fuel efficiency with comfort.
Innovation Solution
A fuel-saving driving diagnostic device and method that assesses acceleration and deceleration by comparing driving operations with eco and HV eco ranges, using a relative torque calculation and display formats like an eco lamp to notify drivers of eco-friendly driving, allowing for a fair evaluation of trade-offs between fuel saving and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fuel consumption reporting methods are used, then drivers receive basic fuel consumption information, but drivers cannot make absolute and fair determination on fuel consumption due to lack of evaluation criteria
Solution Approach 1:
The patent transforms fuel consumption evaluation from absolute values to relative values by introducing eco-range and HV eco-range thresholds. The control unit calculates relative fuel consumption values based on comparison with predetermined ranges, enabling fair evaluation across different driving conditions without requiring complex absolute measurement systems.
Solution Approach 2:
The system dynamically adjusts evaluation criteria based on vehicle type (eco vehicle or HV) and driving conditions. The control unit selectively applies different fuel consumption ranges and evaluation standards according to the detected vehicle type and actual driving state, providing adaptive rather than static evaluation.
2Measurement precision
If detailed driving evaluation criteria are introduced, then fair fuel-saving assessment becomes possible, but driver awareness and effort to improve fuel-saving driving may decrease due to complexity
Solution Approach 1:
The patent uses color-coded visual indicators (display unit showing different colors or symbols) to represent fuel consumption evaluation results. Instead of presenting complex numerical data, the system displays intuitive visual feedback that immediately communicates whether driving falls within eco-range, HV eco-range, or exceeds thresholds, making evaluation results easily understandable.
Solution Approach 2:
The system creates simplified representations of complex fuel consumption data through standardized display formats. The control unit processes detailed measurement data and outputs simplified evaluation results that mirror the essential information needed for driver feedback without requiring drivers to interpret raw data.
3Device complexity
If fuel consumption is evaluated without considering driving conditions, then simple evaluation is possible, but absolute and fair determination cannot be achieved
Solution Approach 1:
The patent introduces multiple parameter thresholds (eco-range, HV eco-range) that account for different vehicle types and driving conditions. The control unit compares actual fuel consumption against these conditional thresholds rather than using a single fixed standard, enabling accurate evaluation that adapts to varying driving scenarios.
Solution Approach 2:
The evaluation system dynamically selects appropriate comparison criteria based on detected vehicle type and driving state. The control unit automatically adjusts which fuel consumption range applies (eco or HV eco-range) based on real-time conditions, providing context-aware evaluation without requiring manual intervention.
Data Source
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AI summary
A vehicle power indication status quantity display unit 16a displays on an indicator a vehicle power indication status quantity obtained by dividing the torque required for driving a hybrid vehicle by the upper limit value of the torque that does not excessively increase the fuel consumption. A HV eco zone 502 of the vehicle power indication status quantity display unit 16a is the zone that is determined by the upper limit value and the lower limit value of the HV eco zone that indicates the motor is being effectively used to drive the vehicle. A check is made to determine whether the vehicle power indication status quantity 505 is within the HV eco zone 502, and, if it is determined to be within the HV eco zone 502, the driving being performed is diagnosed as fuel-saving driving. For example, the ratio of the travel distance with the vehicle power indication status quantity 505 staying within the HV eco zone 502 to the one-trip travel distance is turned into a score, and an advice suitable for the score is presented to the driver. In this manner, the driver's awareness about fuel-saving driving at the time of acceleration and deceleration can be increased.