Vehicle Accessory Regenerative Control for Fuel Efficiency
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Solution Overview
Problem
Conventional control apparatuses for vehicles fail to effectively utilize kinetic energy during regenerative control when the state of charge of the battery is already high, leading to reduced fuel efficiency of the internal-combustion engine.
Innovation Solution
A control apparatus that performs regenerative control by driving vehicle-mounted accessories to convert kinetic energy into drive energy, with drive-control mechanisms ensuring the energy storage means has a margin in energy storage capacity during vehicle running periods other than regenerative control periods, allowing proper energy storage and enhancement of fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If regenerative control is performed by driving vehicle-mounted accessories to convert kinetic energy into drive energy, then fuel efficiency of the internal-combustion engine is improved, but when the state of charge of the battery is already at an adequately high level, kinetic energy cannot be effectively used as electrical power output of the generator
Solution Approach 1:
The control apparatus performs preliminary action by controlling the generator to operate in a drive period before the regenerative control period. This preliminary operation reduces the state of charge of the battery to create sufficient storage capacity margin, ensuring that the battery can effectively receive and store the electrical energy generated during subsequent regenerative braking, thereby resolving the contradiction between improving fuel efficiency and maintaining reliability of energy storage
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
This approach effectively uses kinetic energy as drive energy for vehicle-mounted accessories, enhancing the fuel efficiency of the internal-combustion engine by ensuring the energy storage means has adequate capacity during regenerative control periods.
Implementation Method 1
a vehicle battery is charged with electrical energy generated by driving a generator
Data Source
AI summary
A control apparatus for a vehicle that is capable of enhancing fuel efficiency of an internal-combustion engine. The vehicle is provided with at least one electronically controllable vehicle-mounted accessory that can be driven by the engine, and energy storage means for storing energy generated by the at least one vehicle-mounted accessory being driven by the engine. The apparatus includes regenerative control means for performing regenerative control during deceleration of the vehicle according to a deceleration instruction from a driver, and drive-control means for performing drive-control of the at least one vehicle-mounted accessory during a vehicle running period other than a regenerative control period so that the energy storage means has a margin in energy storage capacity for storing energy to be generated by the at least one vehicle-mounted accessory being driven by the engine during the regenerative control.