Method and system for monitoring exhaust brake state of engine

An exhaust braking and monitoring system technology, applied in engine control, machine/engine, mechanical equipment, etc., can solve problems such as affecting driving safety, inability to know exhaust braking status, and uncontrollable auxiliary braking.

Inactive Publication Date: 2014-03-26
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] For the above-mentioned exhaust braking method, the current driver cannot know the exact exhaust braking status, resulting in uncontrollable auxiliary braking and affecting driving safety

Method used

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  • Method and system for monitoring exhaust brake state of engine
  • Method and system for monitoring exhaust brake state of engine
  • Method and system for monitoring exhaust brake state of engine

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Embodiment Construction

[0053] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] Please refer to Figure 1-2 , figure 1It is a structural schematic diagram of the upper seat of the exhaust valve spring in the exhaust brake state monitoring system provided by the present invention; figure 2 for figure 1 Schematic diagram of the structure of the exhaust valve position detection device installed on the upper seat of the middle exhaust valve spring.

[0055] The monitoring system of engine exhaust brake state in this embodiment includes a position detection device of exhaust valve 50 and a controller. The engine control system is equipped with an exhaust brake switch, which can be set in the cab. When the exhaust brake system is required for auxiliary braking, the driver can activate the exhaus...

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Abstract

The invention discloses a method and system for monitoring the exhaust brake state of an engine. The monitoring method includes the following steps of presetting a position signal of an exhaust valve in the exhaust brake state; detecting an actual position signal of the exhaust valve in real time in the exhaust brake state; judging whether the actual position signal of the exhaust valve conforms to the preset position signal or not, and if not, judging exhaust brake to be abnormal. By means of the monitoring method and the monitoring system, a driver can monitor the exhaust brake state of the engine in the whole process, and therefore auxiliary brake can be reasonably controlled, and the safety coefficient of driving is increased.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a monitoring method and a monitoring system for engine exhaust brake status. Background technique [0002] Exhaust braking is a vehicle auxiliary braking system, which can control the opening and closing of the exhaust valve in different ways, so that the vehicle can increase the braking torque generated by the engine when the vehicle needs to decelerate, so that the vehicle can continuously decelerate or stabilize the vehicle speed, effectively Improve vehicle control performance and improve driving safety. [0003] At present, the engine exhaust braking system mainly includes the following two methods: [0004] The first method: close the butterfly valve in the exhaust pipeline system and force the exhaust valve to open; [0005] The butterfly valve is installed in the exhaust pipeline system. Usually, the butterfly valve is in an open state. When the gas in the engine cylind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D9/06
Inventor 白露陈月春吕文芝张小田
Owner WEICHAI POWER CO LTD
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