Control apparatus

• US 4,897,631 A
• Filed: 04/27/1988
• Issued: 01/30/1990
• Est. Priority Date: 04/29/1987
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kosak, Wolfgang, Jundt, Werner
• Primary Examiner(s): Crosland, Donnie L.
• Application Number:
  US07/186,909
• Time in Patent Office: 643 Days
• Field of Search: 340/52 F, 340/52 R, 340/693, 340/653, 340/635, 340/333, 365/228, 365/229, 364/184, 364/187, 364/246.6, 364/246.9, 364/246.92, 364/424.03, 364/424.04, 364/431.11, 364/431.12, 123/479, 123/480, 123/179 R, 307/10 BP
• US Class Current: 340/438
• CPC Class Codes: F02D 41/249 Methods for preventing the loss of data
• CPC Class Codes: G06F 1/30 Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations for resetting only G06F1/24

Abstract

A control apparatus with connecting terminals which are in part connected to serve a plurality of functions. The control apparatus has at least one memory and can be especially for a control apparatus of an electronic internal combustion engine control wherein an additional voltage source for the memory is provided via at least one output terminal accommodating at least one function.

Claims

1. A control apparatus such as for an internal combustion engine in a motor vehicle, the control apparatus comprising:

said control apparatus having a plurality of connecting terminals for accommodating a plurality of functions;

voltage supply means for supplying a voltage to a first one of said terminals;

switching means for connecting and disconnecting said voltage to and from said first one of said terminals of said control apparatus;

a circuit component for performing one of said functions, said circuit component being connected between a second one of said terminals and said voltage supply means so as to cause a voltage to be applied to said second terminal;

a memory for storing information therein which should not be lost when said switching means is actuated to disconnect the voltage from said control apparatus at said first terminal; and

,

circuit means connected between said second terminal and said memory for supplying the voltage on said second terminal to said memory when said switching means is actuated to disconnect said voltage on said first one of said terminals from said control apparatus thereby preventing the information in said memory from becoming lost.

2. A control apparatus such as for an internal combustion engine in a motor vehicle, the control apparatus comprising:

voltage supply means for supplying a voltage;

switching means for connecting and disconnecting said voltage to and from said control apparatus;

said control apparatus having a plurality of connecting terminals for accommodating a plurality of functions;

a circuit component for performing one of said functions, said circuit component being connected between one of said terminals and said voltage supply means;

a memory for storing information therein which should not be lost when said switching means is actuated to disconnect said voltage from said control apparatus;

circuit means connected between said one terminal and said memory for supplying said voltage to the latter via said circuit component when said switching means is actuated to disconnect said voltage from said control apparatus; and

,

said circuit component being an indicating component;

said control apparatus further comprising drive means for transmitting a drive signal to drive said indicating component via said one terminal.

3. The control apparatus of claim 2, said indicating component being a control lamp and said voltage supply means including ancillary voltage source means for supplying an independent ancillary voltage to said control apparatus via said one terminal and said circuit means when said switching means is switched to disconnect said control apparatus from said voltage of said voltage supply means.