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An internal combustion engine and a method of operation of an internal combustion engine

一种内燃机、操作曲线的技术，应用在发动机操作、内燃活塞发动机、燃烧发动机等方向，能够解决控制系统复杂、昂贵等问题

Inactive Publication Date: 2013-09-25
PERKINS ENGINES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such control systems are complex and expensive

Method used

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  • An internal combustion engine and a method of operation of an internal combustion engine
  • An internal combustion engine and a method of operation of an internal combustion engine
  • An internal combustion engine and a method of operation of an internal combustion engine

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Embodiment Construction

[0027] The internal combustion engine of the present disclosure, such as figure 1 As shown, one or more cylinders 11 may be included in one engine bank 10 . For example, the engine may include four or six cylinders 11 . An intake manifold 18 may provide intake air to each cylinder 11 . The intake air may be a mixture of air and exhaust gas recirculated by an exhaust gas recirculation (EGR) system 12 . The EGR system 12 may include a cooler for cooling recirculated exhaust gas. An EGR valve 13 may be operatively provided to control the amount of exhaust gas recirculated into the intake manifold 18 .

[0028] Non-recirculated exhaust gases may be routed through the turbine portion of turbocharger 14 to exhaust pipe 16 . Exhaust gases may cause the turbine portion to rotate thereby rotating the compressor portion of turbocharger 14 . The compressor section may be configured to boost airflow provided from air inlet 17 to intake manifold 18 . External air can enter the air in...

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PUM

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Abstract

An internal combustion engine and a method of operation are described involving: supplying intake gas from an intake manifold (18) to an air intake port of a combustion chamber in a cylinder (11); selectively operating an air intake valve using a first operating profile (30) and, on demand, switching selective operation of the air intake valve to a second operating profile (31) in which the closing of the air intake valve is delayed compared to the closing of the air intake valve using the first operating profile; wherein at the point (43) of or prior to switching from the first operating profile to the second operating profile the pressure of the intake gas in the intake manifold is increased.

Description

technical field [0001] The present disclosure relates to an internal combustion engine and a method of operating an internal combustion engine. Background technique [0002] Internal combustion engines include intake and exhaust valves to control the amount of intake air and exhaust air into the combustion chambers of each engine cylinder. Generally, the valves are controlled mechanically via camshafts. A cam profile on the camshaft is used to control when each valve opens and closes. [0003] Since the physical shape and profile of the cam can only be optimized for one particular operating condition of the internal combustion engine, variable valve actuation systems are known that can adjust the operation of the valve to suit changing demands. For example, a standard curve may be used when the engine is in medium or high demand, and a late intake valve closing (LIVC) curve may be used for the intake valve during steady state operating conditions where the demand of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D13/02F02D23/00F02D41/00F02M25/07
CPCF02B47/08F02D13/0234F02D13/0269F02D23/00F02D41/0002F02D41/0007F02D41/005F02D41/0077F02M26/05F02M26/10F02M26/23Y02T10/12Y02T10/40
Inventor M·P·尼科尔森C·索恩
Owner PERKINS ENGINES