Vehicle Blower Power Control for Cabin Comfort and Low NVH

The patent applies dynamics by making the blower speed adjustable based on operating conditions. The controller dynamically selects from multiple predetermined speeds (including a first speed and a second speed lower than the first) depending on whether the vehicle is stationary or moving, and whether cabin temperature is within a comfort range. This dynamic adjustment resolves the contradiction by allowing maximum power when needed for temperature control while reducing power when acoustic comfort is the priority.

The patent changes the operational parameters of the blower by implementing multiple predetermined speeds rather than a single maximum speed. The controller modifies the blower speed parameter based on vehicle state (stationary/moving) and thermal conditions (temperature within/outside comfort range). This parameter change enables the system to optimize between temperature control performance and NVH reduction by selecting appropriate speed levels.

The patent applies partial action by using multiple speed levels instead of always operating at maximum power. When the cabin temperature is within the comfort range or when the vehicle is moving, the controller selects lower predetermined speeds (second speed, third speed) that consume less power. Maximum power (first speed) is used only when necessary for rapid temperature adjustment, thus achieving the desired heating/cooling efficiency while minimizing overall power consumption.

The dynamic speed adjustment strategy allows the system to adapt power consumption to actual needs. The controller continuously monitors temperature and vehicle state, dynamically switching between high-power and low-power modes. This resolves the contradiction by ensuring maximum productivity only when thermally necessary while reducing energy use during stable or transient conditions.