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Systems and methods for rapid engine coolant warmup

A technology of engine cooling and cooling system, which is applied in the direction of engine cooling, coolant flow control, engine components, etc., and can solve problems such as expensive, increasing the complexity of vehicle systems, uneven heating durability, etc.

Active Publication Date: 2018-05-11
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, stagnating coolant flow in the engine to allow rapid warm-up can lead to durability issues due to uneven heating of various engine components
Furthermore, the use of electronic valves to selectively control the circulation of coolant in the various coolant loops is expensive and adds to the complexity of the vehicle system

Method used

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  • Systems and methods for rapid engine coolant warmup
  • Systems and methods for rapid engine coolant warmup
  • Systems and methods for rapid engine coolant warmup

Examples

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Embodiment Construction

[0017] The following description relates to systems and methods for regulating coolant flow in a vehicle cooling system during an engine start event. In one example, a vehicle cooling system may include two conventional thermostats, wherein a first thermostat may be positioned on the hot side of the vehicle cooling system, and wherein a second thermostat may be positioned on the cold side of the vehicle cooling system, as figure 1 shown. In this example, the second thermostat may comprise an electric heating thermostat. figure 2 shown in the figure 1 Illustrated is the method by which the system controls coolant flow during an engine start event. Briefly, the method may include, under a first condition, responsive to an engine coolant temperature being below a first threshold, flowing coolant through a first thermostatic valve in a first position and in a first position prior to returning to the engine under a first condition. The four position second thermostatic valve is...

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Abstract

The present invention relates to systems and methods for rapid engine coolant warmup. Methods and systems are provided for regulating a coolant flow in a vehicle cooling system during an engine startup event. In one example, a method may include, during the engine startup event, controlling a flow path of an engine coolant in a vehicle cooling system via a passive valve and an actively regulatablevalve, and responsive to an engine coolant temperature below a threshold at the engine startup event, isolating the flow path of engine coolant to a subsection of the cooling system to enable rapid warming of the engine coolant without stagnating the engine coolant at an engine. In this way, engine coolant may be rapidly warmed at an engine startup event, via coolant flow isolation, rather than coolant flow stagnation, which may decrease uneven heating of engine system components, and which may thus prolong a functional lifetime of the engine system.

Description

technical field [0001] The present invention generally relates to methods and systems for controlling a vehicle engine to adjust a volume of coolant circulation based on coolant temperature. Background technique [0002] Vehicles may include a cooling system configured to reduce engine overheating by transferring heat to ambient air. Therein, coolant is circulated through the engine block to remove heat from the hot engine, and the heated coolant is then circulated through the radiator near the front of the vehicle. Heated coolant may also be circulated through the heat exchanger to heat the passenger compartment. A cooling system may include various components, such as various valves and one or more thermostats. [0003] While vehicles may include cooling systems to reduce engine overheating, it is also understood that vehicle systems tend to operate most efficiently when in an optimal temperature range. For example, engines operating well above optimum temperatures can ...

Claims

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Application Information

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IPC IPC(8): F01P7/16
CPCF01P7/165F01P2050/22F01P2007/146F01P7/048F01P7/167F01P2005/125F01P2060/04F01P2060/045F01P2060/16F01P2070/04F01P2023/08F01P2025/40F01P2025/50F01P2037/02F01P2060/08F01P2060/12F01P3/20F01P5/10F01P7/14F01P7/16F01N2610/11F01P2060/18
Inventor J·P·斯泰容
Owner FORD GLOBAL TECH LLC
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