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Methods and systems for boost control

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

Active Publication Date: 2017-01-25
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 torq

Method used

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  • Methods and systems for boost control
  • Methods and systems for boost control
  • Methods and systems for boost control

Examples

Experimental program
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Embodiment Construction

[0013] The following description relates to the improvement of engine systems with stepped boost equipment (such as figure 1 A's booster engine system) compressor temperature control system and method. The controller can be configured to execute programs (such as Figure 2 to Figure 3 The example program in) to increase the speed of the downstream compressor to reduce the load, and thereby reduce the temperature of the upstream compressor. reference Figure 4 An example temperature control operation is shown. By operating the second compressor, the over-temperature of the first compressor can be suppressed while continuously satisfying the driver's torque demand.

[0014] figure 1 The various aspects of an example engine system 100 including the engine 10 are schematically shown. In the depicted embodiment, the engine 10 is a boosted engine including a multi-stage boosting device. Specifically, the engine 10 includes a first boosting device 13 staged downstream of the second bo...

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Abstract

The invention discloses methods and systems for boost control. Methods and systems are provided for turbine temperature control in an engine system having multiple staged charge boosting devices. In one example, compressed air is provided by a turbocharger compressor until an outlet temperature of the compressor reaches a limit. Thereafter, a compressor of a downstream supercharger is operated to share the load.

Description

Technical field [0001] This specification generally relates to a method and system for realizing turbine temperature control in a step-up engine system equipped with a turbocharger and a supercharger. Background technique [0002] The engine system may be equipped with a boost device, such as a turbocharger or a supercharger, in order to provide boosted air charge and improve peak power output. The use of compressors allows engines with smaller displacements to provide as much power as engines with larger displacements, but with additional fuel economy benefits. In addition, one or more intake boost devices may be staged in series or in parallel with the intake turbocharger to improve the boost response of the turbocharged engine. [0003] Stewart shows an example of a multi-stage intake booster system in US Patent 7,958,730. In it, the high-pressure turbine is staged upstream of the low-pressure turbine, and each turbine is coupled to a corresponding compressor. The multi-stage...

Claims

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Application Information

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IPC IPC(8): F02B37/14F02B37/18F02B39/10F02D23/00
CPCF02B37/14F02B37/183F02B39/10F02D23/00F02B2037/122F02B2039/164Y02T10/12F02B37/11
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