US 4,789,935 AGranted

Suspension controller

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsShuuichi Buma, Toshio Onuma, Kaoru Ohashi, Masami Itou

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Abstract

Provided is a suspension controller which has a plurality of control sections in a control mechanism and which has the order of priority among the suspension controls when two or more different suspension controls are simultaneously instructed from the control sections, so as to optimally control the suspension characteristic according to both the road condition and the running condition of the vehicle. The suspension controller of the invention includes a preference mechanism or logic for preferentially altering the suspension characteristic to a harder state in order to reduce the vibration of the vehicle body and to prevent an abrupt change of the vehicle attitude, thus providing good control, high stability and riding comfort.

Claims8

Dependent claims

A suspension controller for a vehicle comprising:

running condition detection means (M1) for detecting at least one of a vehicle height and a change in the vehicle operation;
control means (M3) comprising a plurality of control sections each having a proper predetermined condition, each control section comparing the detected result of said running condition detection means (M1) with the predetermined condition and, if the result satisfies the condition, outputting a proper command to alter a suspension characteristic;
preference means (M4) for selecting a preference command for altering the suspension characteristic to the hardest state among the proper commands outputted from the control sections of said control means (M3);
and
suspension characteristic alteration means (M2) for altering the suspension characteristic according to the preference command selected by said preference means (M4).

2 more elements

Dependencies are inferred from the claim text.