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Cylinder-deactivated oil-saving control method for partial cylinder of diesel engine

A control method and cylinder fuel-saving technology, applied in engine control, mechanical equipment, machine/engine, etc.

Active Publication Date: 2010-10-13
FAW GROUP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a fuel-saving control method for cylinder deactivation when the diesel engine is partially loaded, which mainly solves the problem of fuel economy when the diesel engine is partially loaded, and can use the lowest cost Realize the goal of fuel saving by stopping cylinders at partial load

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  • Cylinder-deactivated oil-saving control method for partial cylinder of diesel engine
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  • Cylinder-deactivated oil-saving control method for partial cylinder of diesel engine

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] The invention adopts the CAN bus to obtain the vehicle and engine information, and automatically recognizes the load state of the vehicle. Under partial load conditions, in order to prevent the cylinder from working under low load, the cylinder deactivation controller performs partial cylinder deactivation to save fuel as required. control.

[0018] Such as figure 1 As shown: the control system of the present invention includes a cylinder deactivation controller, which can quickly obtain engine and vehicle information through the CAN bus, automatically identify the vehicle status, and perform partial cylinder deactivation and fuel-saving control as required. The information acquisition is based on the CAN network of the whole vehicle, which has good versatility in electronically controlled engines. The acquisition of engine information, such as speed, vehicle sp...

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Abstract

The invention provides a cylinder-deactivated oil-saving control method for partial cylinder of a diesel engine. The control method comprises that: a cylinder-deactivated controller rapidly acquires the information of an engine and a complete vehicle through a CAN bus to automatically identify the complete-vehicle state and perform the cylinder-deactivated oil-saving control of the partial cylinder; a three-dimensional database diagram of the rotating speed, throttle and torque in a normal mode and a cylinder-deactivated mode are stored in the cylinder-deactivated controller; and the cylinder-deactivated controller judges whether the cylinder-deactivated condition is met according to the three-dimensional database diagram, and if the cylinder-deactivated condition is met, the partial cylinder is cut off. The control method has the advantages of capacity of effectively utilizing ECU internal data and strategy, not changing ECU software / hardware and the internal data, not changing the internal structure of an original complete vehicle, realizing the cylinder-deactivated oil-saving control at the lowest cost when the diesel complete vehicle is partially loaded, and fulfilling the aimof saving oil of the complete vehicle.

Description

technical field [0001] The invention relates to a fuel-saving control method for partial cylinder deactivation of a diesel engine. Background technique [0002] At present, the international crude oil price hits a record high, and the fuel price is also rising steadily. The society puts forward higher requirements on the fuel economy of automobiles, and various technical measures that can significantly reduce fuel consumption are highly valued by people. [0003] Partial cylinder deactivation, cylinder fuel cut-off function is one of the effective technical measures to improve the fuel economy of the whole vehicle. When the engine is under partial load conditions, the technology of partial cylinder deactivation is used to increase the load of the cylinders that are not deactivated, so as to prevent the cylinders from operating at low Work under load, so that the efficiency of the whole machine is improved. Thereby improving the fuel economy of the vehicle. In recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D17/02
Inventor 唐颋陈波宁高志宏尤丽艳陆晓燕季峰
Owner FAW GROUP
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