Please log in

Paper / Information search system

日本語

ENGLISH

Help

Please log in

  • Summary & Details

Increased Reliability and Usability through the Introduction of a User Interface Module for Hand-Held Small Engines

Detailed Information

Author(E)1) Bahattin Öztürk, 2) Thorsten Stoffregen
Affiliation(E)1) PRUFREX Engineering e Motion GmbH & Co. KG, 2) PRUFREX Engineering e Motion GmbH & Co. KG
Abstract(E)Mobile hand-held or back-carried small engines must be weight-optimized due to their operability. At the same time there is enormous cost pressure within this market segment. Therefore, not all comfort and additional functions to increase user-friendliness can be adopted from the stationary applications. These include, for example, electric starting devices or additional sensors and actuators that take over advanced control processes to prevent or detect and report user or system errors.
In the mobile small engine segment, this situation leads to the problem that the systems have many requirements for the user. These include, for example:
• physical ability to operate a pull starter
• know-how about the functioning of a combustion engine (2-stroke and 4-stroke)
• know-how for detecting failures and remedial actions
If the knowledge about the behavior of engines is not given, or failures are overlooked, this automatically leads to a form of physical strain on the user due to the many unsuccessful start attempts, which can lead to further subsequent errors.
In the home and hobby segment this leads to a certain frustration and customer dissatisfaction, so that every engine or equipment manufacturer and ignition system supplier pays special attention to and optimizes the starting and running behavior of the application during product development.
In the area of critical applications there are tougher requirements for the reliability and operability, where the above-mentioned conditions can lead to catastrophic consequences with injuries, personal or environmental damage.
This article describes a possibility to extend a mobile, back-carried 2-stroke engine, which is used as a wildfire water pump by fire brigades (Figure 1) with an additional user interface to minimize the demands on the user and to ensure immediate feedback in case of a failure, so that measures can be initiated as quickly as possible without the need for extensive troubleshooting.

About search

close

How to use the search box

You can enter up to 5 search conditions. The number of search boxes can be increased or decreased with the "+" and "-" buttons on the right.
If you enter multiple words separated by spaces in one search box, the data that "contains all" of the entered words will be searched (AND search).
Example) X (space) Y → "X and Y (including)"

How to use "AND" and "OR" pull-down

If "AND" is specified, the "contains both" data of the phrase entered in the previous and next search boxes will be searched. If you specify "OR", the data that "contains" any of the words entered in the search boxes before and after is searched.
Example) X AND Y → "X and Y (including)"  X OR Z → "X or Z (including)"
If AND and OR searches are mixed, OR search has priority.
Example) X AND Y OR Z → X AND (Y OR Z)
If AND search and multiple OR search are mixed, OR search has priority.
Example) W AND X OR Y OR Z → W AND (X OR Y OR Z)

How to use the search filters

Use the "search filters" when you want to narrow down the search results, such as when there are too many search results. If you check each item, the search results will be narrowed down to only the data that includes that item.
The number in "()" after each item is the number of data that includes that item.

Search tips

When searching by author name, enter the first and last name separated by a space, such as "Taro Jidosha".