초록 ▼

A control system for a variable pitch radiator fan is disclosed. The control system is capable of varying the blade pitch of the radiator fan from a normal position to a full reverse position. The control system can change the blade pitch based on a number of factors, including vehicle speed. In sys

A control system for a variable pitch radiator fan is disclosed. The control system is capable of varying the blade pitch of the radiator fan from a normal position to a full reverse position. The control system can change the blade pitch based on a number of factors, including vehicle speed. In systems with a plurality of fans, the control system is also capable of independently controlling the blade pitch of each of the fans. In systems with multiple fans, the control system can produce a circulation mode.

대표청구항 ▼

What is claimed is: 1. A motor vehicle comprising:a chassis;a passenger portion configured to receive at least one passenger;an exterior surface;a radiator disposed proximate the exterior surface, and in between the exterior surface and a fan;the fan including a hub and at least one fan blade, the f

What is claimed is: 1. A motor vehicle comprising:a chassis;a passenger portion configured to receive at least one passenger;an exterior surface;a radiator disposed proximate the exterior surface, and in between the exterior surface and a fan;the fan including a hub and at least one fan blade, the fan blade being variable pitch and capable of assuming a plurality of different pitch angles;a pitch change mechanism configured to control the angle of the fan blade;a control system in communication with the pitch change mechanism; andwherein the control system receives vehicle speed and direction information related to vehicle speed and direction, and uses the vehicle speed and direction information to control the pitch change mechanism.