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Integrated exhaust gas recirculation system for internal combustion engine

A technology of recirculation system and exhaust gas recirculation valve, applied in the direction of internal combustion piston engine, charging system, combustion engine, etc., can solve the problems of high cost and excessive engine downtime.

Inactive Publication Date: 2006-07-12
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Proactively replacing turbochargers early in the "safe" cumulative time is not only expensive but also causes excessive engine downtime

Method used

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  • Integrated exhaust gas recirculation system for internal combustion engine
  • Integrated exhaust gas recirculation system for internal combustion engine
  • Integrated exhaust gas recirculation system for internal combustion engine

Examples

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Embodiment Construction

[0023] Referring to FIG. 1 , an internal combustion engine with a turbocharger and an EGR system is shown diagrammatically. Engine 10 includes an intake manifold 12 and an exhaust manifold 14 . In the illustrated embodiment, the engine includes a turbocharger 16 which generally includes a turbine housed in a housing 18 and a compressor housed in a housing 20 for compressing input air to the engine 10 . This input air is heated during turbocharger compression, however it must be cooled in order to meet engine durability and operating requirements. Cooling is accomplished in the passage of gases expelled from the turbocharger 16 to a charge air cooler (CAC) 22 via a common conduit or passage 24 . This input air is then routed from the charge air cooler to the intake manifold port of the engine through a common conduit or passage 30 .

[0024] The engine 10 also includes an EGR system. This EGR system comprises a control valve 34, and this control valve is integrated in the t...

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PUM

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Abstract

An exhaust gas recirculation (EGR) system for an engine with a variable geometry turbocharge (18) incorporates a master rotary electric actuator (REA) (50) with a microprocessor controller (53) receiving condition signals (46, 48a-e) from sensors (48) associated with the turbocharger and the engine control unit (ECU) (54) and positioning the turbine inlet nozzle geometry of the turbocharger in response to a predetermined matrix of the condition signals. A slave REA (52) is connected through an internal processing unit (58) to the controller to position an EGR valve (34). The processing unit provides an actual position signal to the controller which responds with a desired position signal based on the predetermined condition signal matrix. The processing unit engages the slave REA to position the EGR valve.

Description

[0001] Relevant information about the application [0002] This application claims priority to co-pending application Serial No. 60 / 186,648 filed March 3, 2000 with the same title as this application. technical field [0003] The present invention relates generally to the control of a turbocharger used in an engine with an exhaust gas recirculation (EGR) system, and more particularly to an intelligent electronic actuator with judgment and storage functions, which utilizes the speed, air and EGR gas temperature, and air and EGR gas pressure to control a variable geometry turbocharger with an integrated EGR valve. Background technique [0004] Industrial diesel vehicles often use turbochargers to increase the efficiency of the engine. Also, in order to meet the federal requirement to reduce NOx emissions in 2002, and in addition to ratios, in diesel engines, engine air system controls have become a more complex and important part of overall engine performance. The controls o...

Claims

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Application Information

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IPC IPC(8): F02D21/08F02M25/07F02D43/00
CPCY02T10/121Y02T10/144Y02T10/12
Inventor W·瓦斯兹基维茨C·C·格林特雷
Owner HONEYWELL INT INC
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