Patents by Inventor Marcel J. P. E. Durand

Marcel J. P. E. Durand has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic control unit for internal combustion engines
    Patent number: 4487169
    Abstract: A reciprocating piston internal combustion engine having a plurality of heads, a glow plug associated with each one of the pistons, a source of DC voltage, and a control for providing heating power to the glow plugs. The engine also has engine oil and transmission oil flowing therethrough, and a fan for cooling the oil. A first switch turns the fan on and off. There is included a central electronic control which includes thermistors for sensing a temperature related to the temperature of the engine and for providing a connection from the source of DC voltage to the glow plugs when the sensed temperature is below a predetermined value and for disconnecting the source when the sensed temperature is above the predetermined value. A duty cycle rate generator alternately connects and disconnects the source of DC voltage to the glow plugs above the preset value at a duty cycle rate which ranges from 0 to 100 percent and which depends on the voltage level of the source of DC voltage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: December 11, 1984
    Assignee: KHD-Canada, Inc.
    Inventors: Paul J. Slezak, Marcel J. P. E. Durand, Robert P. Dunlop