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In-vehicle Engine Control Device And Control Method Thereof

一种控制装置、控制方法的技术，应用在发动机控制、机器/发动机、电气控制等方向，能够解决未升压用感应元件驱动电流检测等问题，达到抑制功耗、降低温度上升、准确设定的效果

Inactive Publication Date: 2014-10-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this example, the excitation current of the electromagnetic solenoid (electromagnetic coil) is detected by the current detection resistor and input to the microcomputer, and the boosted high voltage is divided by the voltage dividing resistor and input to the microcomputer, but the boosted high voltage is not input to the microcomputer. The voltage is detected by the driving current of the sensing element

Method used

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  • In-vehicle Engine Control Device And Control Method Thereof
  • In-vehicle Engine Control Device And Control Method Thereof
  • In-vehicle Engine Control Device And Control Method Thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] (1) Detailed description of the structure

[0034] In the following, the general circuit block diagram of the device according to Embodiment 1 of the present invention will be described. figure 1 Be explained. figure 1 Among them, the in-vehicle engine control device 100A is composed of an arithmetic control circuit unit 110A configured as a single-chip or two-chip integrated circuit element together with a boost control circuit unit 210A or an injection control circuit unit 170 described later. In 108 , a solenoid valve drive control circuit unit 180 for the solenoid coils 81 to 84 described later and a booster circuit unit 200A serving as a high-voltage power supply for rapidly exciting the solenoid coils 81 to 84 are mainly configured. First, the on-vehicle battery 101 connected to the outside of the on-vehicle engine control device 100A directly supplies the on-vehicle engine control device 100A with the battery voltage Vb, and supplies the on-vehicle engine contro...

Embodiment approach 2

[0090] (1) Detailed description of the structure

[0091] Below, with and figure 1 Centering on the different points of the device, the overall circuit block diagram of the device according to Embodiment 2 of the present invention is Figure 7 Be explained. The main difference between the vehicle-mounted engine control device 100B in the second embodiment and the vehicle-mounted engine control device 100A in the first embodiment is that Figure 8 , Figure 9 The difference between the boost control circuit unit 210B described later and the boost control circuit unit 210A, and other overall configurations, figure 1 and Figure 7 exactly the same. As a result, the calculation control circuit unit 110A and the program memory 113A are replaced with the calculation control circuit unit 110B and the program memory 113B, and the same reference numerals in each figure indicate the same or corresponding parts.

[0092] next, yes Figure 7 The detailed block diagram of the part c...

Embodiment approach 1

[0115] Points and Features of Embodiment 1 and Embodiment 2

[0116] As is clear from the above description, in the vehicle-mounted engine control method used in the vehicle-mounted engine control device according to Embodiment 1 or Embodiment 2 of the present invention, the boost control circuit units 210A and 210B further include a boost period measuring timer. The meter 220A or the standby time measurement timer 220B, the boost period measurement timer 220A measures the charging time Tc, the charging time Tc is the charging voltage of the above-mentioned high-voltage capacitor 204 from the above-mentioned valve opening command signal INJn (n= 81-84) from generation to the time until the minimum voltage Vx0 is reduced to the minimum voltage Vx0 due to rapid excitation of the above-mentioned electromagnetic coils 81-84, and then reaches the above-mentioned target upper voltage Vx2 by recharging, the standby time measurement timer 220B measures Charging remaining time Tb, the ...

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Abstract

In an inductive element which is intermittently excited by a boosting opening and closing element and charges a high-voltage capacitor to a high voltage, an inductive element current proportional to a voltage across both ends of a current detection resistor and a boosted detection voltage which is a divided voltage of the high-voltage capacitor are input to a boosting control circuit portion via a high-speed A / D converter provided in an arithmetic and control circuit unit. The boosting control circuit portion adjusts the inductive element current so as to be suitable for the time from the present rapid excitation to the next rapid excitation, and controls opening and closing of the boosting opening and closing element so as to obtain a targeted boosted high voltage which is variably set by a microprocessor of an arithmetic and control circuit unit.

Description

technical field [0001] The present invention relates to a vehicle-mounted engine control device. In order to drive a solenoid valve for fuel injection of an internal combustion engine at a high speed, a booster circuit section that boosts the voltage of a vehicle-mounted battery to generate a high voltage is used to rapidly drive a solenoid valve driving electromagnetic coil. Excitation, followed by valve open holding control using the voltage of the on-board battery, particularly an on-vehicle engine control device with an improved boost circuit section for obtaining a boosted high voltage, and its control method. Background technique [0002] There is a vehicle-mounted engine control device that sequentially generates a valve opening command signal for a plurality of electromagnetic coils for driving a fuel injection electromagnetic valve provided in each cylinder of a multi-cylinder engine by using a microprocessor that responds to a crank angle sensor. , select and set t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/34
CPCF02D41/28F02D41/20F02D2041/2003F02D2041/2051F02D2041/2058F02D2041/2006F02D2041/201F02D2041/2013
Inventor 西田充孝西泽理
Owner MITSUBISHI ELECTRIC CORP
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