What is claimed is:
1. A method for detecting combustion misfires in a multi-cylinder engine wherein, for each crankshaft rotation, segment times elapse during operation of the engine and each segment time corresponds to a piston movement of a cylinder to be measured and is the time in which the crankshaft passes through a circular segment angular region, the method comprising the steps of:
individually determining the rough-running values (LUT) for each cylinder of the engine by measuring the segment times;
detecting combustion misfires on the basis of said rough-running values;
pregiving a first threshold value (SW1) for detecting combustion misfires;
comparing the determined rough-running values (LUT) in a desired value comparison to a second threshold value (SW2) which is, in value, substantially less than the first threshold value (SW1) pregiven for detecting misfires;
reducing the first threshold value (SW1) to a lower level when:
(a) when there is a regular drop below the second threshold value (SW2) within a pregiven time interval (t); or,
(b) during a specific number of engine revolutions (u).
2. The method of claim 1, comprising the further steps of:
filtering said rough running values (LUT) to obtain filtered rough running values (FLUT);
computing cylinder-individual equalization or correction factors for influencing injection times or ignition time points of the individual cylinders in an evaluation unit on the basis of the filtered rough running values;
comparing the determined rough running values (LUT) or the filtered rough running values (FLUT) in a desired value comparison to a second threshold value (SW2) which is, in value, substantially less than the first threshold value (SW1) pregiven for detecting misfires;
reducing the first threshold value (SW1) to a lower level when:
(a) when there is a regular drop below the second threshold value (SW2) within a pregiven time interval (t); or,
(b) during a specific number of engine revolutions (u).
3. The method of claim 2, comprising the further step of decreasing the first threshold value (SW1) pregiven for detecting misfires to the value of the lower second threshold value (SW2).
4. The method of claim 3, wherein an increase of the first threshold value (SW1) for misfire detection is effected by the second threshold value (SW2) being exceeded after the threshold value for detecting misfires is reduced to a lower level by the determined rough running values (LUT, FLUT).
5. The method of claim 4, wherein the threshold value (SW1) for misfire detection is increased to its original value at the start of the method.
6. The method of claim 5, wherein the reduction of the first threshold value (SW1) for misfire detection is to a lower level takes place in several stages with the magnitude of the individual threshold values lies between the magnitude of the first threshold value (SW1) for misfire detection and the threshold value (SW2).
7. The method of claim 2, comprising the further steps of storing the cylinder individual equalization or correction factors (GL) after each desired-actual comparison of the rough running values (LUT) in a precontrol characteristic field; and, keeping the cylinder-individual equalization or correction factors (GL) unchanged after reducing the first threshold value (SW1) for misfire detection to a lower level.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A mobile communication device comprising:
a casing;
a memory installed within the casing for storing a first frame image of a first function menu and a second frame image of a second function menu;
a display unit installed within the casing coupled to the memory for displaying a frame image;
a control unit installed within the casing coupled to the display unit for controlling the display unit to display, in sequence, the first frame image, then a frame image of at least one transitive image, and finally the second frame image when the control unit receives a command for transferring the first function menu to the second function menu;
an interpolator within the casing coupled to the control unit for interpolating a visually altered version of the first frame image, a visually altered version of a second frame image, or a mixture of both as the frame image of the at least one transitive image; and
a timer installed within the casing for determining the control unit to control the display unit to display time interval between the first frame image and the at least one transitive image or to display the time interval between the at least one transitive image and the second frame image, the control unit controlling the display unit to display the first frame image, the at least one transitive image and the second image according to the time intervals provided by the timer when the control unit receives the command for transferring the first function menu to the second function menu.
2. The mobile communication device of claim 1 wherein the memory further stores a transition effect program code, and the control unit executes the transition effect program code to generate the at least one corresponding transitive image when the control unit receives the command for transferring the first menu to the second menu.
3. The mobile communication device of claim 1 further comprising: an input module for inputting a command for transferring the first function menu to the second function menu.
4. The mobile communication device of claim 3 wherein the input module is capable of inputting an activating command to the control unit, and the control unit is capable of controlling the display unit to display the at least one transitive image after receiving the activating command from the input module.
5. The mobile communication device of claim 3 wherein the input module comprises a plurality of keypads.
6. The mobile communication device of claim 1 wherein the mobile communication device is a mobile phone.
7. The mobile communication device of claim 1 wherein the control unit controls the display unit to display a new transition image after each keypad press.
8. A mobile communication device comprising:
a casing;
a memory installed within the casing for storing a first frame image of a first function menu and a second frame image of a second function menu;
a display unit installed within the casing coupled to the memory for displaying a frame image;
a control unit installed within the casing coupled to the display unit for controlling the display unit to display, in sequence, the first frame image, then a frame image of at least one transitive image, and finally the second frame image when the control unit receives a command for transferring the first function menu to the second function menu;
an interpolator within the casing coupled to the control unit for interpolating a mixture of the first frame image and the second frame image to generate the frame image of the at least one transitive image; and
a timer installed within the casing for determining the control unit to control the display unit to display time interval between the first frame image and the at least one transitive image or to display the time interval between the at least one transitive image and the second frame image, the control unit controlling the display unit to display the first frame image, the at least one transitive image and the second image according to the time intervals provided by the timer when the control unit receives the command for transferring the first function menu to the second function menu.
9. The mobile communication device of claim 8 wherein the control unit controls the display unit to display a plurality of new transition images according to a user adjustable cadence.
10. The mobile communication device of claim 8 wherein the control unit controls the display unit to display a new transition image after each keypad press.