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Air intake temperature correction method and device and engine controller

An engine controller, intake air temperature technology, applied in engine control, electrical control, machine/engine, etc., can solve problems such as intake air temperature measurement deviation, eliminate measurement errors, reliable input, optimize economy and power performance Effect

Active Publication Date: 2018-06-01
WEICHAI POWER CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides an intake air temperature correction method and device to solve the problem of intake air temperature measurement deviation caused by the influence of heat radiation on the intake air temperature sensor

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  • Air intake temperature correction method and device and engine controller
  • Air intake temperature correction method and device and engine controller
  • Air intake temperature correction method and device and engine controller

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Embodiment Construction

[0040] 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.

[0041] An embodiment of the present invention provides a method for correcting intake air temperature, which is applied to an engine controller, and the method flow chart is as follows figure 1 shown, including the following steps:

[0042] S10, determining the current working condition of the engine;

[0043] In this embodiment, since the engine will generate different heat under different working conditions, the impact on the intake air temperature sensor w...

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Abstract

The invention provides an air intake temperature correction method and device and an engine controller. The method is applied to the engine controller, and comprises the steps of determining the current working condition of an engine; determining the current absorbing heat of an air intake temperature sensor under the current working conditioner; and correcting the air intake temperature measuredby the air intake temperature sensor according to the current absorbing head. Based on the method disclosed by the invention, the measuring errors of the air intake temperature sensor can be reduced or even eliminated on the premise that neither the manufacturing cost nor the vehicle weight is increased, more reliable input is provided for subsequent calculation of the air intake amount, and thusthe economical efficiency and power performance of the engine are optimized.

Description

technical field [0001] The invention relates to the technical field of automobiles, and more specifically relates to a method and device for correcting intake air temperature and an engine controller. Background technique [0002] In EGR (Exhaust Gas Recirculation, exhaust gas recirculation system), it is necessary to supply oil to the cylinder in combination with the intake air volume of the engine. Therefore, it is very important to accurately measure the intake air volume of the engine. [0003] At this stage, sensors are mainly used to measure the intake air temperature and intake air pressure, and the intake air volume is calculated based on the volume of the space where the gas is located. The intake air temperature sensor for measuring the intake air temperature is installed in the intake manifold, and the core component is a thermistor, so it is greatly affected by the heat radiation of the engine cylinder liner, supercharger and other components, which easily causes...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02
CPCF02D41/02F02D2200/0416
Inventor 张成伟高翠于淼淼
Owner WEICHAI POWER CO LTD