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Engine brake using brake valve and partial admission flow turbine turbocharger

A technology of engine braking and turbocharger, which is applied in the direction of machine/engine, engine control, combustion engine, etc., and can solve problems such as ineffective rotation of the compressor wheel, loss of compressed air, and obstruction of a large amount of airflow of the turbocharger

Inactive Publication Date: 2012-05-23
INT ENGINE INTPROP CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the valve in this position, in high back pressure situations, substantial airflow through the turbocharger can be impeded and compressed air entering the cylinders can loss occurred

Method used

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  • Engine brake using brake valve and partial admission flow turbine turbocharger
  • Engine brake using brake valve and partial admission flow turbine turbocharger
  • Engine brake using brake valve and partial admission flow turbine turbocharger

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Embodiment Construction

[0023] While the invention is susceptible to embodiments in many different forms, which are shown in the drawings and will be described in detail herein, it is believed that certain embodiments of these embodiments for an understanding of the invention should be considered as principles of the invention. are not intended to limit the invention to the particular embodiments described.

[0024] exist figure 1 The engine 100 is schematically shown in . The engine 100 has a cylinder block 101 including a plurality of cylinders. The cylinders in cylinder block 101 are fluidly connected to an intake system 103 and to an exhaust system 105 . The exhaust system comprises a first conduit 105a from cylinders 1,2,3 of a bank of cylinders and a second conduit 105b from cylinders 4,5,6. While an in-line arrangement of six cylinders is shown, the invention also encompasses in-line or V-shaped or other arrangements of multiple cylinders of any number of cylinders.

[0025] Turbocharger 1...

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PUM

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Abstract

An engine braking system includes a butterfly valve located in the exhaust system upstream of a partial admission engine turbocharger. A bypass exhaust gas passage is used to supply exhaust gas to the turbine when the flap valve is in the closed position. By using a backpressure butterfly valve located upstream of the turbocharger, the valve can be closed completely to generate high levels of backpressure. By using the external bypass exhaust gas supply to the turbine housing, the turbine continues to spin, the engine mass flow is not choked off, and improved brake performance will result.

Description

technical field [0001] The present invention relates to internal combustion engines, including but not limited to the control and operation of turbochargers, EGR systems, and engine braking for internal combustion engines. Background technique [0002] Proper and reliable braking is ideal for vehicles, especially large towing trailers. Although drum or disc brakes are capable of absorbing large amounts of energy in the short term, the absorbed energy is converted into heat in the braking mechanism. The engine braking system can be used to assist the braking of the vehicle. [0003] Multi-cylinder internal combustion engines, especially diesel engines for large tractor-trailer trucks, may include an exhaust gas turbocharger. The turbocharger comprises a turbine which drives a compressor via a shaft which, during normal operation, causes the intake air pressure in the intake duct to increase. [0004] Known braking systems include an exhaust brake that inhibits the flow of ...

Claims

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Application Information

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IPC IPC(8): F02D23/00
CPCF02M25/0707F02D23/00F02D9/06F02M25/0713Y02T10/121Y02T10/144F02M26/05F02M26/10Y02T10/12
Inventor M·D·巴特科维奇L·C·卡塔尼S·格瑞文特辛千凡M·R·基林克
Owner INT ENGINE INTPROP CO LLC