System for virtual frost sensor

Abstract

A system for a virtual frost sensor is disclosed including a method for operating the virtual frost sensor. The method includes determining a first temperature indicative of a fluid upstream of the component and determining a second temperature indicative of a fluid downstream of the component. The method also includes sensing at least one engine parameter and determining a first parameter as a function of the at least one engine parameter. The method further includes determining a third temperature indicative of a temperature associated with the engine component as a function of the first temperature, the second temperature, and the first parameter.

Description

technical field [0001] The present disclosure relates to a system for a virtual frosting sensor system, and more particularly to a method and apparatus for a virtual frosting sensor. Background technique [0002] Turbocharged and / or supercharged engine systems typically include a compressor and an air cooler upstream of one or more combustion chambers of the engine. Typically, combustion air includes a mixture of ambient air and recirculated exhaust gases in an attempt to reduce undesired emissions produced during combustion. Typically, the air cooler is exposed to and utilizes ambient air to cool the combustion air heated by the compressor. Recirculated exhaust gases often contain significant amounts of water vapor, and in cooler environments, the air cooler may lower the temperature of the combustion air below the freezing point of water, resulting in frost on the inner wall surfaces of the air cooler. Frost increases the pressure drop across the air cooler and can adver...

AI Technical Summary

Problems solved by technology

[0004] Although the device of the '263 patent can determine when frost is likely to form on the surface of the air intake, the device includes a transducer disposed on the surface of the air intake, which reduces the integrity of the surface and / or requires complex mechanical configuration

Additionally, by recirculating high temperature exhaust gases to heat the surface of the intake, the device of the '263 patent would expose exhaust gases containing significant amounts of water vapor to cooler surfaces, potentially increasing frost formation

Furthermore, if the recirculated exhaust gas includes aftertreatment to lower the temperature of the exhaust gas, for example to reduce particulates and / or protect compressor components, the exhaust gas will have a lower temperature and insufficiently heat the intake surface

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