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Diesel engine multi-idle-state control method and diesel engine controller

A diesel engine and controller technology, applied in engine control, electrical control, fuel injection control, etc., can solve the problems of single idling speed, inability to take into account energy saving and response speed, etc., and achieve the effect of reducing fuel consumption, taking into account energy saving and response speed

Inactive Publication Date: 2016-11-30
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a diesel engine multi-idle state control method and a diesel engine controller to solve the problem that the existing technical solution adopts a single idle speed, which cannot give consideration to both energy saving and response speed

Method used

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  • Diesel engine multi-idle-state control method and diesel engine controller
  • Diesel engine multi-idle-state control method and diesel engine controller
  • Diesel engine multi-idle-state control method and diesel engine controller

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Embodiment 1

[0049]Embodiment 1 of the present invention discloses a diesel engine multi-idle state control method, which is applied to a diesel engine controller. The flow chart is as follows figure 1 As shown, the diesel engine multi-idle state control method includes:

[0050] S101. Obtain the current idle state of the diesel engine according to the determination rule of the set idle state and the current state of the vehicle, wherein the set idle state includes a warm-up idle state, a working idle state and a working idle state;

[0051] In the process of executing step S101, according to the specific work requirements of the vehicle, it is necessary to preset three idling states for the diesel engine: warm-up idling state, working idling state and working idling state; , the intake pressure is small and stable, the torque output is basically zero, and when there is no workload, the diesel engine controller determines that the current idle state is the warm-up idle state; For shovelin...

Embodiment 2

[0058] Based on the method for controlling multiple idle states of a diesel engine disclosed in Embodiment 1 of the present invention, this Embodiment 2 discloses another method for controlling multiple idle states of a diesel engine. The flow chart is as follows figure 2 shown, including:

[0059] S101. Obtain the current idle state of the diesel engine according to the determination rule of the set idle state and the current state of the vehicle, wherein the set idle state includes a warm-up idle state, a working idle state and a working idle state;

[0060] S102, acquiring vehicle operation information, wherein the vehicle operation information includes accelerator voltage value, gear state, handbrake state and hydraulic system pressure signal value;

[0061] S103, when the vehicle operation information satisfies the preset idle state switching condition corresponding to the current idle state, controlling the diesel engine to switch from the current idle state to a corres...

Embodiment 3

[0065] Based on the above-mentioned method for controlling multiple idle states of diesel engines disclosed in Embodiments 1 and 2 of the present invention, Embodiment 3 also discloses a method for controlling multiple idle states of diesel engines. The flow chart is as follows image 3 As shown, where, when the current idle state is the warm idle state, such as figure 1 and figure 2 In step S103 shown, when the vehicle operation information satisfies the preset idle state switching condition corresponding to the current idle state, the specific execution process of controlling the diesel engine to switch from the current idle state to the corresponding idle state includes the following steps:

[0066] S301, when the accelerator voltage value is zero and the pressure signal value of the hydraulic system is positive, control the diesel engine to switch from the warm-up idle state to the working idle state;

[0067] S302, when the throttle voltage value is positive, the gear p...

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Abstract

The invention discloses a diesel engine multi-idle-state control method and a diesel engine controller. The method includes the steps that according to the set idle state judgment rule and the current state of a vehicle, the current idle state of a diesel engine is obtained, wherein the set idle states include a warming-up idle state, a work idle state and an operating idle state; vehicle operation information is obtained, wherein the vehicle operation information includes an accelerator voltage value, a gear state, a hand brake state and a hydraulic system pressure signal value; when the vehicle operation information meets preset idle state switching conditions corresponding to the current idle state, the diesel engine is controlled to be switched into the corresponding idle state from the current idle state. Based on the disclosed method, the requirements for idle states of the diesel engine of different working conditions can be met, fuel consumption is reduced, and energy conservation and response speed are considered.

Description

technical field [0001] The invention relates to the technical field of vehicle idle speed control, and more specifically relates to a method for controlling multiple idle speed states of a diesel engine and a diesel engine controller. Background technique [0002] Idling speed refers to the minimum speed at which the diesel engine operates under no-load conditions and only needs to overcome the frictional resistance of the internal parts without outputting power externally to maintain the stable operation of the diesel engine. Idle speed is one of the five basic working conditions of a diesel engine. In the state of idling speed, the amount of fuel injected per revolution of the diesel engine is constant, and the amount of fuel consumption is directly proportional to the speed of the diesel engine. State fuel consumption is a problem that needs to be solved at this stage, especially in the field of loaders. [0003] At present, diesel engines for loaders use a single idle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/08
CPCF02D41/08F02D41/083F02D2200/50F02D2200/502
Inventor 梁成奇张成国宋永亮
Owner WEICHAI POWER CO LTD
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