Vehicle Cabin Air Conditioning Boost After Passenger Entry

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Solution Overview

Problem

Existing air conditioning systems for vehicles often fail to provide sufficient comfort to users, especially in extreme temperatures, as they do not adequately account for the user's body heat or external conditions like solar radiation after initial pre-air conditioning.

Innovation Solution

An air conditioning system that increases output for a predetermined period after the user enters the vehicle, using sensors to detect outside temperature and solar radiation, and includes auxiliary heaters and ventilators to optimize air flow and temperature control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If cool air is blown from the lower portion toward the upper portion of the vehicle cabin, then the user feels cool in summer, but the user with heat-containing body or clothes does not feel sufficient comfort

Engineering Contradiction:
Improvevehicle cabin temperatureVSAvoiduser comfort
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The system performs preliminary air conditioning before the user enters the vehicle, cooling the lower portion of the cabin. When the user enters, the system then activates strong air conditioning mode to rapidly cool the upper portion and the user's body, transitioning from preliminary preparation to intensive cooling action.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The air conditioning system dynamically changes its operation mode based on whether the user is present. It switches from normal air conditioning to strong air conditioning mode (increasing output) when the user enters, and adjusts the air flow direction and intensity to adapt to the user's thermal state.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If air conditioning output is increased for a predetermined period after the user gets into the vehicle, then user comfort is improved, but energy consumption increases

Engineering Contradiction:
Improveuser comfortVSAvoidair conditioning energy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system applies strong air conditioning for a predetermined period after the user enters the vehicle, then transitions to normal air conditioning mode. This periodic intensive cooling provides rapid comfort improvement while limiting energy consumption to a specific time window rather than continuous high-power operation.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system changes the air conditioning output parameter from normal level to increased level for a predetermined period after user entry, then returns to normal level. This parameter change allows intensive cooling when needed while managing overall energy consumption through temporal control.

Inventive Principle:
Principle #35Parameter changes

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

Enhances user comfort by providing a larger air volume flow of cool air in summer and warm air in winter for an optimal period, improving air conditioning control and user experience.

Implementation Method 1

an air blower that blows air that has passed through the air conditioner toward the vehicle interior

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 2

air conditions a vehicle cabin before a user gets into a vehicle

Methodology Applied
Scientific EffectThermal exchange: Heat Exchanger

Data Source

PatentUS12194811B2Air conditioning system for vehicle
Publication Date: 2025.01.14 TOYOTA JIDOSHA KK
  • US12194811B2 patent drawing
  • US12194811B2 patent drawing
  • US12194811B2 patent drawing

AI summary

An air conditioning system for a vehicle that air conditions a vehicle cabin before a user gets into a vehicle, in which the air conditioning system strongly air conditions the vehicle cabin by increasing an air conditioning output for a predetermined period after the user gets into the vehicle.