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Control logic circuit for connecting multiple high side loads in engine control module

A control module and engine technology, applied in engine control, load supply circuit, combustion engine, etc., can solve problems such as ECM error fault codes

Active Publication Date: 2020-08-14
CUMMINS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inrush current can cause the ECM to generate false fault codes

Method used

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  • Control logic circuit for connecting multiple high side loads in engine control module
  • Control logic circuit for connecting multiple high side loads in engine control module

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Embodiment Construction

[0009] In order to promote an understanding of the principles of the present disclosure, reference will now be made to the embodiments shown in the drawings, and specific language will be used to describe the same embodiments. However, it should be understood that, therefore, it is not intended to limit the scope of the present disclosure, and those skilled in the art will make any changes and further modifications in the illustrated embodiments for the relevant disclosures considered herein, as well as the principles of the present disclosure as shown herein. Any other applications.

[0010] Referring generally to the drawings, various embodiments disclosed herein relate to control logic circuits that connect multiple high-side loads to a common return pin in an engine control module (ECM) application. In some embodiments, multiple loads share a single voltage source (eg, a battery) on the high side, and each load is coupled to the voltage source through a respective high side d...

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Abstract

Methods and apparatuses for connecting multiple loads with a common return pin in engine control module application are disclosed. Only one of the multiple loads can be connected to a power source ata time. At the high side, each load is coupled to the power source through a respective pin at a connector. At the low side, the multiple loads share a common return pin at the connector that connectsthe loads to the ground. When a first load is connected to the power source at the high side, a first low side driver circuit is used to connect the first load to the ground at the low side. When a second load is connected to the power source at the high side, the second low side driver circuit is used to connect the second load to the ground at the low side.

Description

Technical field [0001] The present disclosure generally relates to the control logic circuit of the engine control module. Background technique [0002] The engine control module (ECM) can control the power supply to various loads through switching devices (such as MOSFET switches). In some applications, multiple loads may share a single voltage source (for example, a battery), and each load is coupled to the voltage source through its own high-side driver circuit. On the low side, multiple loads share a common return pin, which connects the load to ground through a shared low-side driver circuit. In essence, some loads are capacitive, such as variable geometry turbocharger (VGT) loads, which have very high initial surge currents. Inrush current may cause the ECM to generate an incorrect fault code. It is desirable to avoid generating wrong fault codes due to inrush current. Summary of the invention [0003] One embodiment relates to an engine control module. The engine contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K5/007F02D41/26F02D41/28
CPCF02D41/20H03K17/165F02B37/186F02B37/24F02D2041/2068F02D2400/22F02D41/221H01F7/1844H01F7/1877F02D41/28F02D2400/14H02J7/0063
Inventor A·吉里A·R·柴恩M·冯M·斯温
Owner CUMMINS LTD