Engine power boost system and method

A power boosting, engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., to achieve the effect of protection from loss

Active Publication Date: 2016-06-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Engine durability is challenged during extended periods of operation wit

Method used

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  • Engine power boost system and method

Examples

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[0034] Hereinafter, some preferred embodiments of the engine power boost function according to the present invention will be described with reference to the accompanying drawings.

[0035] First, it needs to be pointed out that the engine power boost function of the present invention can be applied to various vehicles and equipment equipped with internal combustion engines, such as construction equipment, such as figure 1 Excavator etc. shown.

[0036] From figure 1 It can be seen that the excavator includes an internal combustion engine 10 for driving the excavator to move on the ground, a hydraulic system 20 (two pumps of which are shown in the figure), which is also driven by the engine 10 to perform excavation operations, and The engine electronic controller 30 is connected to the engine 10 and the hydraulic system 20 for receiving their operating parameters and controlling their operation.

[0037] The hydraulic system 20 bears a load 40 during excavation operations, which cause...

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Abstract

An engine power boost system for an internal combustion engine, a corresponding method and an excavator are disclosed. The system comprises sensing means for sensing a load intended to be overcome by the engine during the operation of the engine, and an engine controller connected with the engine and the sensing means for receiving load information from the sensing means and controlling the operation of the engine. The engine controller is configured to activate an engine power boost by increasing the limit of fuel injection quantity of the engine from a standard injection quantity limit to an increased injection quantity limit when the load information indicates that the load is increased over a load threshold, and to end the engine power boost by recovering the standard injection quantity limit after the engine power boost has been activated for a preset duration. The engine can be protected effectively by means of the system and method of the disclosure.

Description

technical field [0001] The present invention relates to an engine power boosting system and method, which can be applied in vehicles or equipment equipped with an internal combustion engine. Background technique [0002] A vehicle or device powered by an electronically controlled internal combustion engine is equipped with an electronic controller for controlling the torque / speed of the engine. Once a risk of overload is detected, the engine is controlled to increase the engine full load limit to allow the engine to run at a higher torque. The raised limit can be activated for a short period of time, after which the original limit is restored to control engine power. [0003] For example, the patent document US2007028892A1 discloses an internal combustion engine having a power boost function capable of recovering the rotational speed, wherein when it is determined that the operating speed of the engine is reduced due to an external load, the operation of the fuel supply sys...

Claims

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Application Information

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IPC IPC(8): F02D29/00F02D29/04
CPCE02F9/2292E02F9/2246E02F9/2296F02D29/04F02D41/04
Inventor 林伟青邓永翰
Owner ROBERT BOSCH GMBH
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