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Method and system for hybrid vehicle control

A hybrid vehicle and vehicle technology, which is applied in the directions of hybrid vehicles, road vehicle drive control systems, engine control, etc., can solve problems such as the inability to achieve the best fuel economy advantage of a fuel reformer, and achieve improved reforming advantages, Provides fuel economy, improves fuel economy effects

Active Publication Date: 2022-04-12
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these issues result in the inability to achieve the optimum fuel economy advantages of a fuel reformer

Method used

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  • Method and system for hybrid vehicle control
  • Method and system for hybrid vehicle control
  • Method and system for hybrid vehicle control

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Embodiment Construction

[0013] The following description relates to systems for improving hybrid vehicles—such as figure 1 Vehicle systems - systems and methods for fuel economy. as reference figure 2 Described in the engine system of , a vehicle system may include an engine configured with an exhaust-driven reformer capable of reforming a liquid fuel into a gaseous reformate. The controller can be configured to execute control programs - such as image 3 Example procedure for - to adjust engine operation while running the reformer based on the amount of gaseous fuel / reformate available. Controllers can also execute programs—such as Figure 4 Example procedure - to adjust motor operation during reforming to enable the engine to stay within a narrow operating range while maintaining desired power levels. Figure 5 An example hybrid vehicle operation with fuel reformation adjustments is shown in . In this way, fuel reformer technology can be synergized with hybrid vehicle technology to achieve si...

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Abstract

The present invention relates to methods and systems for hybrid vehicle control. Methods and systems are provided for synergizing the advantages of an engine exhaust driven fuel reformer in a hybrid vehicle system. The vehicle controller can maintain the engine within a narrow operating range where fuel reformer operation is optimal, while using motor and / or CVT tuning to handle transients generated when driver demand changes. The controller may also adjust the operating temperature range of the reformer to enable extended fuel reforming even after the hybrid's engine has been shut down.

Description

technical field [0001] The present description generally relates to methods and systems for controlling fuel reforming in an engine of a hybrid vehicle system. Background technique [0002] A fuel reformer may be used to convert alcohol fuel to gaseous fuel (reformate) for fueling an engine. For example, an ethanol reformer can reform ethanol to include hydrogen (H 2 ), carbon monoxide (CO) and methane (CH 4 ) reformed gas for combustion in the engine. The hydrogen content of the fuel improves combustion stability, enabling the engine to operate at higher dilution levels, such as with higher EGR levels, thereby improving fuel economy. An example of an ethanol reforming system is shown by Kerns et al. in US 8,539,914. Wherein, the variable fuel engine is equipped with a fuel reformer, which reforms the variable ethanol fuel into a gaseous fuel reformate. Contents of the invention [0003] The present inventors have recognized that the fuel economy advantages of a refor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/00B60W10/06B60W10/26F02B43/12F02D41/00F02D13/02F02D17/04
CPCB60W10/06B60W10/26B60W20/00F02B43/12F02D13/02F02D17/04F02D41/0002F02D41/0077F02D2041/001B60W2710/06B60W2710/244B60K13/04B60K6/48B60W10/10B60K2006/4825B60W2510/068B60W2710/0644B60W20/16F02M26/16F02M26/36F02M26/41F02M26/52B60K6/24B60K6/543B60W10/08B60W2510/244B60W2710/083B60W2710/1005B60Y2400/442Y10S903/905Y10S903/906Y10S903/909Y10S903/918Y10S903/93Y10S903/951Y02T10/40Y02T10/62B60W20/13B60K6/26B60K6/36B60K6/40B60K6/445B60W10/107B60W2710/0694B60Y2200/92B60Y2300/47F16H2037/0866
Inventor T·G·里昂K·J·米勒D·R·马丁
Owner FORD GLOBAL TECH LLC