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Fuel composition and aging estimation

A fuel and fuel tank technology, applied in fuel injection control, transportation and packaging, combustion engines, etc., can solve problems such as changes in fuel composition

Pending Publication Date: 2020-08-28
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aging can lead to changes in fuel composition

Method used

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  • Fuel composition and aging estimation
  • Fuel composition and aging estimation
  • Fuel composition and aging estimation

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Embodiment Construction

[0028] The following description relates to systems and methods for estimating the ethanol content, water content, and age of fuel contained in an engine fuel tank. An exemplary embodiment of a cylinder in an internal combustion engine having each of a direct fuel injector and a port fuel injector is at figure 1 given in. figure 2 can be depicted with figure 1 fuel system used with the engine. The engine controller can be configured such as according to Figure 3 to Figure 6 The described method performs an exemplary routine to determine ethanol content and water in fuel based on fuel rail temperature after fuel injection or fuel pump stroke, change in fuel rail pressure, fuel rail pressure pulsation frequency, and damping coefficient of pressure pulsation content and fuel aging. The engine controller can also be configured to determine fuel ethanol content and fuel age based on the attenuation of the ultrasonic signal in the fuel, such as Figure 17 to Figure 18 mention...

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Abstract

The invention provides fuel composition and aging estimation. Methods and systems are provided for estimating ethanol content in fuel and an age of the fuel in a vehicle engine. In one example, a method may include estimating fuel ethanol content and / or fuel age based on fuel temperature, a speed of sound in fuel, and an attenuation co-efficient of an ultrasonic signal in fuel. One or more engineoperating parameters may be adjusted based on the estimated fuel ethanol content and fuel age.

Description

technical field [0001] The present description generally relates to methods and systems for estimating the ethanol content in fuel and the age of the fuel in a vehicle engine. Background technique [0002] A flexible fuel vehicle (FFV) is an alternative to conventional gasoline powered vehicles and includes an internal combustion engine to burn a mixture of gasoline and a secondary fuel such as ethanol, methanol, propanol or other alcohols and octane value improver. Fuel blends incorporating ethanol are particularly popular due to the derivation of ethanol from biomass, of which various feedstocks are available from agriculture. The flex-fuel engine can be adapted to burn a 0-100% ethanol fuel blend, thereby reducing the well-to-wheel carbon footprint compared to gasoline. In a hybrid vehicle, since only the motor torque is used to propel the vehicle for extended periods of time, fuel can remain unused in the fuel tank. Aging can cause changes in fuel composition. For ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06F02D41/06F02D41/30
CPCF02D19/0655F02D41/064F02D41/30B60W10/06B60W10/08B60W20/18B60W2530/211F02D19/084F02D19/088F02D41/0025F02D2200/06F02D2200/0602F02D2200/0606F02D2200/0612F02D2250/04Y02T10/30Y02T10/62F02D2041/224
Inventor 罗纳克·维韦克·卡希德戈皮钱德拉·苏尼拉克里斯多夫·保罗·格鲁格拉
Owner FORD GLOBAL TECH LLC