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Method and system for boost control

A pressure and compressor technology, applied in the field of turbine temperature control, can solve problems such as drop, insufficient torque demand delivery, vehicle driving performance, vehicle operator driving experience degradation, etc., to improve performance, not degrade vehicle driving performance, and avoid insufficient delivery Effect

Active Publication Date: 2020-11-06
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a drop in boost output below the driver demanded boost pressure can result in an apparent under-delivery of torque demand and a reduction in vehicle drivability
Additionally, the driving experience for the vehicle operator is degraded

Method used

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  • Method and system for boost control
  • Method and system for boost control
  • Method and system for boost control

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Embodiment Construction

[0013] The following description pertains to improvements for use in engine systems with staged boosting devices such as figure 1 A system and method for compressor temperature control of a boosted engine system. The controller can be configured to execute programs such as Figure 2 to Figure 3 example program in ) to increase the speed of the downstream compressor to reduce the load, and thereby reduce the temperature of the upstream compressor. refer to Figure 4 An example temperature control operation is shown. By operating the second compressor, overheating of the first compressor may be suppressed while continuing to meet driver torque requests.

[0014] figure 1 Aspects of an example engine system 100 including engine 10 are shown schematically. In the depicted embodiment, engine 10 is a boosted engine including a multi-stage boosting device. Specifically, the engine 10 includes a first boosting device 13 staged upstream of a second boosting device 15 . This conf...

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Abstract

This application discloses methods and systems for boost control. Methods and systems are provided for turbine temperature control in engine systems with multi-stage charge boosting devices. In one example, compressed air is provided by a turbocharger compressor until the compressor's outlet temperature reaches a limit. Thereafter, the compressor of the downstream supercharger is operated to share the load.

Description

technical field [0001] The present description generally relates to methods and systems for implementing turbine temperature control in a stepped boost engine system configured with a turbocharger and a supercharger. Background technique [0002] Engine systems may be configured with boosting devices, such as turbochargers or superchargers, to provide a boost air charge and improve peak power output. The use of a compressor allows a smaller displacement engine to provide as much power as a larger displacement engine, but with additional fuel economy benefits. Additionally, one or more intake boost devices may be staged in series or in parallel with the intake turbocharger to improve turbocharged engine boost response. [0003] One example of a multi-stage intake boost system is shown by Stewart in US Patent 7,958,730. In it, high pressure turbines are staged upstream of low pressure turbines, each turbine being coupled to a respective compressor. The multi-stage configura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/14F02B37/18F02B39/10F02D23/00
CPCF02B37/14F02B37/183F02B39/10F02D23/00F02B2039/164F02B2037/122Y02T10/12F02B37/11
Inventor 肖柏韬H-R·欧萨乐M·A·桑蒂洛J·E·M·赫尔斯特伦
Owner FORD GLOBAL TECH LLC