Idle speed control method and device
An idle speed control and idle speed technology, applied in electrical control, engine control, fuel injection control and other directions, can solve the problems of inability to ensure rapid engine response and high fuel consumption, and achieve the effect of improving fuel economy, fast response, and taking into account fuel economy.
Active Publication Date: 2021-12-21
WEICHAI POWER CO LTD
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Problems solved by technology
When the idle speed setting is high, the engine response can be ensured quickly, but the fuel consumption is high; when the idle speed setting is low, the fuel consumption can be reduced, but the engine response cannot be ensured quickly
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Embodiment Construction
[0044] The core idea of the present invention is to control the engine to maintain a relatively high idle speed during the working process of the construction machinery to ensure that the engine has a faster response; lower idle speed. Realized to ensure that the engine has a faster response while taking into account the fuel economy.
[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] see figure 1 , which provides a flow chart of an idle speed control method for an embodiment of the present invent...
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The idle speed control method and device provided by the present invention belong to the technical field of engines. When the pedal opening signal satisfies the preset opening reduction change rule, that is, when the construction machinery is not required to work, the transmitter is controlled within the preset time. Maintain the first idle state, and then control the engine to switch from the first idle state to the second idle state. The engine speed of the second idle state is lower than the engine speed of the first idle state, so that when the construction machinery is not working for a short time, it is maintained at a higher idle state to ensure a faster response of the engine when there is a power demand; When the machinery does not work for a long time, the engine is switched from a high idle speed state to a low idle speed state, which improves fuel economy. Thus, while ensuring a faster response of the engine, fuel economy is taken into account.
Description
technical field [0001] The invention relates to the technical field of engines, and more specifically, to an idle speed control method and device. Background technique [0002] The idling state refers to the running state of the engine under no-load conditions. In the idling state, it only needs to overcome the friction resistance of the internal parts, and does not output power externally. The amount of fuel consumed at idle speed is directly proportional to the engine speed. At present, the engines of construction machinery all adopt a single idle speed. When the idle speed setting is high, it can ensure that the engine responds quickly, but the fuel consumption is high; when the idle speed setting is low, the fuel consumption can be reduced, but it cannot ensure the rapid response of the engine. Contents of the invention [0003] In view of this, the present invention proposes an idle speed control method and device, in order to achieve the purpose of taking fuel eco...
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IPC IPC(8): F02D41/08
CPCF02D41/08F02D2200/602F02D2200/101F02D2200/02
Inventor 张鲁兵任宪丰许帅李兰菊
Owner WEICHAI POWER CO LTD