Hybrid Engine State Detection Using First-Motor Power Index
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hybrid vehicle systems face challenges in accurately detecting the state of the internal combustion engine, particularly in identifying defects or abnormalities, which can affect vehicle performance and efficiency.
Innovation Solution
A vehicle state detection apparatus that utilizes a power-generation index measured by the first motor to detect the state of the internal combustion engine by comparing the current power-generation index with a reference index, allowing for the identification of abnormalities and defective cylinders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the internal combustion engine state is monitored using traditional methods, then the system structure remains simple, but the detection precision and fault identification accuracy are insufficient
Solution Approach 1:
The first motor serves as an intermediary device to indirectly detect the internal combustion engine state. Instead of directly measuring engine parameters, the system measures the power generation characteristics of the first motor which reflects the engine's operational state, thereby achieving precise detection without complex direct measurement systems
Solution Approach 2:
The patent replaces traditional mechanical sensing systems with an electrical measurement approach. By measuring the electrical power generation index (current, voltage, power) from the first motor, the system substitutes complex mechanical vibration or pressure sensors with simpler electrical measurement circuits, improving precision while reducing overall system complexity
2Productivity
If no real-time engine state monitoring is implemented, then the system complexity remains low, but the vehicle performance optimization and maintenance timing are delayed
Solution Approach 1:
The system implements continuous feedback by constantly monitoring the power generation index of the first motor and comparing it against reference values. This feedback mechanism enables real-time detection of engine state changes, allowing for immediate performance optimization and timely maintenance scheduling without requiring complex predictive analytics systems
Solution Approach 2:
The first motor serves a dual function: it generates power for the vehicle while simultaneously serving as its own diagnostic sensor. The power generation data from normal operation is self-utilized for engine state monitoring, eliminating the need for separate dedicated monitoring hardware and reducing system complexity while improving productivity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise detection of internal combustion engine defects and abnormalities, improving fault diagnosis accuracy and enhancing vehicle performance and efficiency by allowing for timely maintenance and operation adjustments.
Implementation Method 1
a first motor as a power generator... configured to generate power with the internal combustion engine
Data Source
AI summary
A vehicle state detection apparatus of a hybrid vehicle according to an embodiment includes an internal combustion engine and a first motor configured to generate power with the internal combustion engine, wherein a state of the internal combustion engine is detected based on a power-generation index indicating power being generated by the first motor.