Variable pitch radiator fan control system
First Claim
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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, the radiator also being disposed between the exterior surface and a first fan and a second fan;
a power plant disposed proximate the radiator;
the first fan aligning with a first portion of the radiator and the second fan aligning with a second portion of the radiator;
a control system in communication with the first fan and the second fan;
wherein the control system is configured to vary the blade pitch of the first fan and is configured to also independently vary the blade pitch of the second fan; and
wherein, in a first mode, the control system is configured to adjust the blade pitch of the first fan to a position whereby air is pushed towards the radiator from the first fan, and the control system is configured to adjust the blade pitch of the second fan to a position whereby air is pulled from the radiator to the second fan, thus creating a circulation air flow.
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Abstract
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.
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Citations
20 Claims
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1. A motor vehicle, comprising:
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a chassis; a passenger portion configured to receive at least one passenger; an exterior surface; a radiator disposed proximate the exterior surface, the radiator also being disposed between the exterior surface and a first fan and a second fan; a power plant disposed proximate the radiator; the first fan aligning with a first portion of the radiator and the second fan aligning with a second portion of the radiator; a control system in communication with the first fan and the second fan; wherein the control system is configured to vary the blade pitch of the first fan and is configured to also independently vary the blade pitch of the second fan; and wherein, in a first mode, the control system is configured to adjust the blade pitch of the first fan to a position whereby air is pushed towards the radiator from the first fan, and the control system is configured to adjust the blade pitch of the second fan to a position whereby air is pulled from the radiator to the second fan, thus creating a circulation air flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A motor vehicle, comprising:
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a chassis; a passenger portion configured to receive at least one passenger; an exterior surface; a radiator disposed proximate the exterior surface, the radiator also being disposed between the exterior surface and a first fan and a second fan; a power plant disposed proximate the radiator; the first fan aligning with a first portion of the radiator and the second fan aligning with a second portion of the radiator; a control system in communication with the first fan and the second fan; wherein the control system is configured to vary the blade pitch of the first fan and is configured to also independently vary the blade pitch of the second fan; wherein, in a first mode, the control system is configured to adjust the blade pitch of the first fan to a position whereby air is pushed towards the radiator from the first fan, and the control system is configured to adjust the blade pitch of the second fan to a position whereby air is pulled from the radiator to the second fan, thus creating a circulation air flow; and wherein, in a second mode, the control system is configured to adjust the blade pitch of the first fan to a position whereby air is pulled from the radiator to the first fan, and the control system is configured to adjust the blade pitch of the second fan to a position whereby air is pulled from the radiator to the second fan. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A motor vehicle, comprising:
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a chassis; an exterior surface; a radiator disposed proximate the exterior surface, the radiator also being disposed between the exterior surface and a first fan and a second fan; a power plant disposed proximate the radiator; the first fan aligning with a first portion of the radiator and the second fan aligning with a second portion of the radiator; a control system in communication with the first fan and the second fan; wherein the control system is configured to vary the blade pitch of the first fan and is configured to also independently vary the blade pitch of the second fan; and wherein the control system is configured to adjust the blade pitch of the first fan to provide a flow of air from the power plant to the radiator when temperature information received by a sensor is above a predetermined level; and wherein the control system is configured to adjust the blade pitch of the first fan to provide a flow of air from the radiator to the power plant when a speed of the motor vehicle increases. - View Dependent Claims (18, 19, 20)
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Specification