METHOD FOR COMBINED PREHEATING AND COOLING OF A COOLANT

• US 20160102597A1
• Filed: 10/12/2015
• Published: 04/14/2016
• Est. Priority Date: 10/13/2014
• Status: Abandoned Application

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: JURZOK, CORINNA, BERG, ALEXANDER
• Application Number:
  US14/880,343
• Publication Number:
  US 20160102597A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/08 Air inlets for cooling; Shutters or blinds therefor radiator or grille guards B60R19/52
• CPC Class Codes: B60K 2025/026 by a hydraulic transmission
• CPC Class Codes: B60Y 2200/221 Tractors
• CPC Class Codes: F01P 2005/046 with electrical pump drive
• CPC Class Codes: F01P 2025/08 Temperature
• CPC Class Codes: F01P 2025/13 Ambient temperature
• CPC Class Codes: F01P 2025/32 Engine outcoming fluid temperature
• CPC Class Codes: F01P 2025/40 Oil temperature
• CPC Class Codes: F01P 2037/02 starting
• CPC Class Codes: F01P 5/043 Pump reversing arrangements
• CPC Class Codes: F01P 7/044 using hydraulic drives
• CPC Class Codes: F01P 7/048 using electrical drives
• CPC Class Codes: F01P 7/10 by throttling amount of air flowing through liquid-to-air heat exchangers
• CPC Class Codes: F01P 7/16 by thermostatic control
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A method for cooling a coolant for waste heat cooling of an internal combustion engine is described for an agricultural working vehicle. The method includes providing a heat exchanger through which coolant flows and an air delivery means generates an air flow through the heat exchanger.

Claims

1. A method for combined preheating and cooling of a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, the method comprising:

providing a heat exchanger through which coolant flows and an air delivery means to generate an air flow through the heat exchanger;

generating air flow via the air delivery means in a direction towards or away from the internal combustion engine as required;

detecting a temperature of the internal combustion engine;

producing air flow in the direction away from the internal combustion engine when a temperature value of the internal combustion engine is below a threshold value; and

reversing the air delivery means when the temperature value exceeds the threshold value.

2. The method of claim 1, wherein the threshold value is established at a level of an operating temperature of the internal combustion engine.

3. The method of claim 1, wherein the air delivery means comprises a fan with an electric or hydraulic drive.

4. The method of claim 3, wherein the fan has fixed blades.

5. The method of claim 3, wherein the fan has variable pitch blades.