Apparatus for influencing control quantities of an internal combustion engine
First Claim
1. An apparatus for influencing and controlling an internal combustion engine having a predetermined number of cylinders (z), the influence and control being in dependence upon the position of an accelerator pedal and a signal prepared for a specific cylinder, the apparatus comprising:
- a segment system for generating actual-valve signals (I1 to Iz) indicative of the time elapsing between each two successive combustions over a crank angle of 720°
;
mean-value means receiving said signals (I1 to Iz) for forming the means value (Mz) thereof; and
,an arrangement for forming a cylinder specific rotational speed signal (S) from said actual-value signals and said mean value (Mz), the arrangement including;
a plurality of proportional-integral regulating units corresponding to respective ones of said cylinders for forming respective correcting signals (S1 to Sz) from respective ones of said actual-value signals (I1 to Iz) and said mean value (Mz); and
,synchronization means for making ready the corrective signal for cylinder (n+1) in which the next combustion will occur at the time combustion occurs in cylinder (n).
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Accused Products
Abstract
The invention is directed to an apparatus for influencing control quantities of an internal combustion engine by means of which vibrations of the entire vehicle in the lower engine speed range, particularly at idling, are to be eliminated. This is accomplished by allocating to each cylinder a regulating unit which regulates the control quantities influencing the respective cylinder, such as fuel metering, exhaust gas recirculation, start of injection, duration of injection, air/fuel ratio, ignition time point, et cetera, for the smoothest possible running condition.
28 Citations
13 Claims
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1. An apparatus for influencing and controlling an internal combustion engine having a predetermined number of cylinders (z), the influence and control being in dependence upon the position of an accelerator pedal and a signal prepared for a specific cylinder, the apparatus comprising:
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a segment system for generating actual-valve signals (I1 to Iz) indicative of the time elapsing between each two successive combustions over a crank angle of 720°
;mean-value means receiving said signals (I1 to Iz) for forming the means value (Mz) thereof; and
,an arrangement for forming a cylinder specific rotational speed signal (S) from said actual-value signals and said mean value (Mz), the arrangement including; a plurality of proportional-integral regulating units corresponding to respective ones of said cylinders for forming respective correcting signals (S1 to Sz) from respective ones of said actual-value signals (I1 to Iz) and said mean value (Mz); and
,synchronization means for making ready the corrective signal for cylinder (n+1) in which the next combustion will occur at the time combustion occurs in cylinder (n). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Apparatus for influencing control quantities of an internal combustion engine having a plurality of cylinders, the apparatus comprising:
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a plurality of regulating units for corresponding ones of said cylinders; synchronization means for generating actual-value signals indicative of the respective time spans between successive combustions; mean-value means for generating a mean-value signal from said actual-value signals; each of asid regulating units including means for forming a correcting value for the cylinder corresponding thereto from an actual-value signal and from said mean-value signal; and
,said apparatus being effective only in a definite, presupposable rotational engine speed range and being controlled in the transition ranges bounding on said range so as to avoid a jump-like climb or drop of the correcting signal.
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Specification