SCR System Control Module Automatic First Fill Triggering

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current SCR systems face efficiency and noise issues due to air entrainment in the main pump when a new liquid tank or main pump is introduced, requiring manual triggering of the first fill function, which can be overlooked, leading to reduced system performance and increased labor costs.

Innovation Solution

A control module that automatically recognizes new devices within the SCR system by reading and comparing IDs, triggering the first fill function to purge air from the main pump, ensuring efficient operation without external intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the first fill function is manually triggered, then air can be purged from the main pump, but operator oversight may occur leading to reduced system efficiency

Engineering Contradiction:
Improvesystem operation reliabilityVSAvoidmanual operation requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The control module automatically detects when a new liquid tank or main pump is installed and autonomously triggers the first fill function without requiring manual operator intervention. The system monitors device IDs and initiates the air purging sequence automatically, making the system self-servicing and eliminating human error in triggering this critical function.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The control module continuously monitors the operational status and device IDs of components in the SCR system. When a new device is detected, the system provides feedback by comparing the current device ID with stored records, and automatically activates the first fill function in response to this feedback signal, ensuring reliable operation without manual input.

Inventive Principle:
Principle #23Feedback

2Reliability

If the first fill function is manually triggered, then air purging can be performed, but additional labor time and costs are incurred

Engineering Contradiction:
Improvesystem operation reliabilityVSAvoidlabor time for first fill
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs the first fill function automatically upon detecting new equipment installation, eliminating the need for manual labor. The control module handles the entire air purging sequence autonomously, reducing both labor time and associated costs while maintaining system reliability.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The control module is pre-programmed with the knowledge that the first fill function must be executed when new equipment is installed. By automatically detecting new devices and preemptively triggering the air purging sequence before normal operation begins, the system eliminates the need for separate manual intervention and reduces overall system setup time.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If a new liquid tank or main pump is installed, then system capacity is improved, but air entrainment in the main pump occurs reducing efficiency

Engineering Contradiction:
Improvedevice replacement capabilityVSAvoidSCR system efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The control module monitors device IDs and automatically detects when a new liquid tank or main pump is installed by comparing current readings with stored records. This feedback mechanism ensures that the system adapts to new components and automatically initiates the first fill function to purge air, maintaining productivity and efficiency after device replacement.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system takes preliminary action by automatically triggering the first fill function immediately upon detecting new equipment installation. This preemptive measure prevents air entrainment in the main pump before it can affect system operation, counteracting the potential harmful effect of device replacement on productivity.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentEP3581774B1First fill function triggering control module and method for vehicle SCR system
Publication Date: 2021.02.17 ROBERT BOSCH GMBH
  • EP3581774B1 patent drawingFigure 1~2
  • EP3581774B1 patent drawingFigure 3~4

AI summary

A first fill function triggering control module for use in a vehicle SCR system, configured to: be connected to a device in the SCR system, the device causing air to enter a main pump of a supply module of the SCR system when used for the first time, and be able to recognize an ID of the device or an intrinsic component element thereof; and be connected to a memory storing an ID of the device or the intrinsic component element thereof, wherein the first fill function triggering control module is also configured to: automatically recognize an ID of the device or the intrinsic component element thereof once a vehicle engine has started, and compare the recognized ID with the ID of the device or the intrinsic component element thereof stored in the memory, in order to determine whether the device is newly installed; instruct the SCR system to begin operating if it is determined that the device is not newly installed; trigger a first fill function of the SCR system if it is determined that the device is newly installed, and instruct the SCR system to begin operating when the first fill function has been completed.