Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
244 words
In an electronic arrangement for idling stabilization between a signal transmitter for ignition spark formation and an ignition device for internal combustion engines, in which for a falling engine rotational speed the ignition timepoint is advanced below a first engine rotational speed (A) at the high end of a stabilization range until a second intermediate engine rotational speed (B) in the stabilization range is reached, said advance in ignition being attained by a delay circuit supplying a constant delay signal between said first and second engine rotational speeds, and then the ignition timepoint is maintained constant until a third engine rotational speed (C) at the low end of the stabilization range is reached, said constant ignition timepoint being attained by said delay circuit supplying an increased delay signal between said second and third engine rotational speeds, and wherein undelayed pulses are generated outside of the stabilization range, said delay circuit including a sawtooth generator triggered by an edge of a pulse from said signal transmitter, said sawtooth generator being coupled at the output side thereof to a storage means and an amplifier, coupled parallel to said storage means, having an element non-linear with respect to voltage in the feedback branch of the amplifier, a comparator means coupled to the outputs of said amplifier and said storage means, for detecting when the signal from said amplifier exceeds the value stored in said storage means and generating a signal which is coupled to said ignition device.
Claim 2
Dependent Claim
244 words
In an electronic arrangement for idling stabilization between a signal transmitter for ignition spark formation and an ignition device for internal combustion engines, in which for a falling engine rotational speed the ignition timepoint is advanced below a first engine rotational speed (A) at the high end of a stabilization range until a second intermediate engine rotational speed (B) in the stabilization range is reached, said advance in ignition being attained by a delay circuit supplying a constant delay signal between said first and second engine rotational speeds, and then the ignition timepoint is maintained constant until a third engine rotational speed (C) at the low end of the stabilization range is reached, said constant ignition timepoint being attained by said delay circuit supplying an increased delay signal between said second and third engine rotational speeds, and wherein undelayed pulses are generated outside of the stabilization range, said delay circuit including a sawtooth generator triggered by an edge of a pulse from said signal transmitter, said sawtooth generator being coupled at the output side thereof to a storage means and an amplifier, coupled parallel to said storage means, having an element non-linear with respect to voltage in the feedback branch of the amplifier, a comparator means coupled to the outputs of said amplifier and said storage means, for detecting when the signal from said amplifier exceeds the value stored in said storage means and generating a signal which is coupled to said ignition device.
Claim 3
Dependent Claim
148 words
Arrangement as claimed in claim 1, further comprising a differentiating circuit coupled to the output of said comparator; a monostable flip flop coupled to the output of said comparator, said flip flop including a controllable switch having a control input coupled to the output of said comparator and also having an input coupled to said storage means, the outputs of said monostable flip flop forming the outputs of said delay circuit which is coupled to the input of a priority circuit, a second input of which is coupled to the input of the electronic arrangement for idling stabilization, whereby the priority circuit upon detecting a signal at its input terminal from the monostable flip flop conducts that signal to the output thereof, and in the absence of a signal from said monostable flip flop couples the input signal of the electronic idling stabilization arrangement to the output thereof.
Claim 4
Dependent Claim
32 words
Arrangement as claimed in claim 1 or 2, further comprising a differentiating circuit coupled between the input of the electronic idling stabilization arrangement and both said storage means and said sawtooth generator.
Claim 5
Dependent Claim
31 words
Arrangement as claimed in claim 2, wherein said priority circuit includes two differentiating elements including operative resistors, and two inverters coupled to said operative resistors to form a bistable flip flop.