1. A method for operating an internal combustion engine assembly including an internal combustion engine, an ignition system for controlling the ignition in said engine, a device for supplying fuel and a detecting unit for detecting the engine rpm (n) of said internal combustion engine; said engine defining a permissible limit engine rpm (ng) and a control range (A) of said engine rpm (n) above said limit engine rpm (ng); the method comprising the steps of:
limiting said engine rpm (n) in said control range (A) by suppressing said ignition;
limiting the ignition in said control range (A) by suppressing the ignition in individual engine cycles wherein said engine rpm (n) lies above a control engine rpm (na);
forming a noncombustion engine cycle ratio (NECR) as the ratio of a number of engine cycles wherein the ignition is suppressed to the total number of the ignitions; and,
shifting said noncombustion engine cycle ratio (NECR) in said control range (A).
2. The method of claim 1, wherein said noncombustion engine cycle ratio (NECR) is shifted by changing the supplied fuel quantity.
3. The method of claim 2, wherein said supplied fuel quantity is changed continuously.
4. The method of claim 3, wherein said supplied fuel quantity is reduced to shift said noncombustion engine cycle ratio (NECR).
5. The method of claim 1, wherein said noncombustion engine cycle ratio (NECR) is shifted until said noncombustion engine cycle ratio (NECR) has dropped to below 20%.
6. The method of claim 5, wherein said noncombustion engine cycle ratio (NECR) is shifted until said noncombustion engine cycle ratio (NECR) has dropped to below 10%.
7. The method of claim 6, wherein said noncombustion engine cycle ratio (NECR) is shifted until said noncombustion engine cycle ratio (NECR) has dropped to approximately 0%.
8. The method of claim 5, wherein a control variable for said engine is determined from parameters in said control range (A).
9. The method of claim 8, wherein a maximum (NECRmax) of said noncombustion engine cycle ratio (NECR) is determined in said control range (A).
10. The method of claim 9, wherein the method comprises the further steps of:
forming a characteristic line indicating a fuel quantity (x), which is to be supplied, as a function of said engine rpm (n); and,
using said maximum (NECRmax) or a percentage part thereof for adjusting said characteristic line.
11. The method of claim 1, wherein the method comprises the further steps of:
forming a characteristic line indicating a fuel quantity (x), which is to be supplied, as a function of engine rpm (n);
for adjusting said characteristic line below said limit engine rpm (ng), changing the airfuel ratio and evaluating a change in said engine rpm (n) resulting from the changed airfuel ratio.
12. The method of claim 11, wherein said airfuel ratio is changed by changing the supplied fuel quantity.
13. The method of claim 1, wherein said device for supplying fuel meters the fuel quantity (x) which is to be supplied for each engine cycle.
14. The method of claim 1, wherein said method comprises the further steps of:
in said control range (A), monitoring a pattern (P) of engine cycles for which no ignition takes place; and,
suppressing the ignition in the following engine cycle when said pattern (P) is coincident with a critical pattern (Pcrit) of said engine cycles for which no ignition results.
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 tool mounting system comprising:
a plastic tool connector head with a nose and back side;
a generally square shaft guide with four orthogonal walls and an open distal end formed within said head;
a raised section of a plastic bump extending from a wall of said shaft guide into the shaft guide whereby a portion of the shaft guide near the location of the raised section is diminished;
a tool with a metal square shaft having a free end and said shaft being of a diameter less than said shaft guide but greater than said diminished shaft guide; and,
whereby upon insertion of said free end into the shaft guide a portion of said raised section is removed by the free end, forming a pressure fit between the residual of the plastic bump, shaft guide and shaft.
2. The tool mounting system of claim 1, further comprising a well in said shaft that catches and retains residual raised section.
3. The tool mounting system of claim 2, wherein the raised section has a first and a second substantially flat side wall and a substantially flat top.
4. The tool mounting system of claim 3, wherein said first and second side walls of the raised section are generally perpendicular to the wall of the shaft guide they extend from.
5. The tool mounting system of claim 3, wherein at least one of said first and second side walls has a radiused edge wherein it meet said top.
6. The tool mounting system of claim 2, wherein the raised section has a first and a second substantially flat side wall and angled top.
7. The tool mounting system of claim 6, wherein at least one of said first and second side walls has a radiused edge wherein it meet said top.
8. The tool mounting system of claim 2, wherein at least one of said first and second side walls is at an obtuse angle to said shaft guide channel wall.
9. The tool mounting system of claim 2 further comprising a visual queue formed on the distal end of said nose indicating an orientation for alignment of a shaft with said shaft guide channel.
10. The tool mounting system of claim 1, wherein the shaft is harder than the raised section of plastic.
11. A tool mounting system comprising:
a plastic tool connector head with a back side and a nose;
a generally square shaft guide with four orthogonal walls formed within said head and opening at the distal end of the nose;
a square shaft with a diameter less than said shaft guide having a free end;
a first and second of raised section forming plastic bumps extending from walls of said shaft guide into the shaft guide whereby a portion of the shaft guide near the location of each raised section is diminished;
upon insertion of the shaft into the shaft guide each bump a tool with a metal shaft pressure fit against the residuals in said shaft guide; and,
whereby upon insertion of said free end into the shaft guide a portion of each of said raised sections is removed by the free end forming a pressure fit between the residual of the plastic bumps, shaft guide and shaft.
12. The tool mounting system of claim 11 further comprising a first well in said shaft that catches and retains the residual of the raised sections.
13. The tool mounting system of claim 12, further comprising:
a first well in said shaft that catches and retains the residual of said first raised section; and,
a second well in said shaft that catches and retains the residual of said second raised section.