Title:
【発明の名称】内燃機関の制御装置用冷却装置
Document Type and Number:
Japanese Patent JP2824315
Kind Code:
B2
Abstract:
A cooling system for control apparatus has a control apparatus device (10) for an internal-combustion engine, which is set in operation by an ignition contact signal. The control apparatus device is cooled with the aid of a coolant circuit which has a pump motor (14). In the control apparatus device there is a self-latching circuit (21) which supplies voltage to the pump motor and to a voltage stabilising device (15), for operating a microprocessor (16), as soon as the ignition contact signal is present. If the ignition contact signal ceases, the cooling process of the control apparatus device is not terminated immediately, the pump motor continuing to run until it is ensured that components with a normal temperature resistance in the control apparatus device cannot be damaged by overheating as a result of any build-up of heat. The microprocessor determines when the switch-off condition is met. …The described system has the advantage that components having a normal temperature resistance can be used in the control apparatus device. In addition, there is the advantage that the microprocessor can carry out self-diagnosis procedures even while being operated temporarily after the ignition contact signal has ceased, which procedures cannot be carried out with conventional systems until the internal-combustion engine has started, which then leads to a delay during starting up of the internal-combustion engine. ……
Inventors:
Herbert Graf
Jürgen Schwenger
Werner Zimmermann
Johannes Rochel
Jürgen Schwenger
Werner Zimmermann
Johannes Rochel
Application Number:
JP11188890A
Publication Date:
November 11, 1998
Filing Date:
May 01, 1990
Export Citation:
Assignee:
Robert Bosch Gezelshaft Mitt Beschlenktel Haftung
International Classes:
F01P7/14; F01P3/12; F01P7/08; F01P7/16; F01P11/14; F02D41/00; (IPC1-7): F01P7/14; F01P3/12
Domestic Patent References:
| JP6487822A | ||||
| JP6364607B2 |
Attorney, Agent or Firm:
Kato Taku