Stephen K Flammersfeld

6536264, Mar 25, 2003

Apr 11, 2002

10/045758

Stephen K. Flammersfeld - Ann Arbor MI
Ian Daniel McKenzie - Canton MI
David Lloyd Hart - Ann Arbor MI

Detroit Diesel Corporation - Detroit MI

G01N 1700

73 86

An apparatus to visually check coolant corrosiveness having first and second opposing ends in spaced apart relation to each other, and a sidewall extending substantially unbroken therebetween to define a hollow body; a non corrodible coolant barrier at said first end occluding said first end and forming a water tight seal over said first end; said non corrodible barrier having a transparency in at least a portion of said barrier; a corrodible coolant barrier at said second end occluding said second end and forming a water tight seal over said second end; whereby changes in coolant pH render the coolant corrosive, which corrodes the coolant corrodible barrier, thereby allowing coolant into said hollow body to be seen through said transparency in said first end.

6671608, Dec 30, 2003

Feb 11, 2002

10/073435

Ian D. McKenzie - Canton MI
Stephen Karl Flammersfeld - Ann Arbor MI

Detroit Diesel Corporation - Detroit MI

G06F 700

701 93, 701110

A system, storage medium, and method for controlling an engine in a vehicle which provides the operator with a particular operating capability for a specified time period, which time period is reestablished at a predefined interval, including determining whether the operator has tampered with the engine control system clock to obtain additional time for the particular operating capability. The system, storage medium, and method monitor the system clock and utilize one or more criteria to determine whether tampering has occurred. If the system clock has been tampered with, one or more additional steps are taken, including logging the tampering event, suspending any steps which would provide the particular operating capability to the operator for any additional time until the next interval, or until the engine has been returned to personnel authorized to reprogram the engine control.

20010044690, Nov 22, 2001

May 4, 2001

09/849543

Stephen Flammersfeld - Ann Arbor MI, US
Richard Avery - West Bloomfield MI, US
Ian McKenzie - Canton MI, US

Detroit Diesel Corporation - Detroit MI

B60K031/00

701/093000, 180/170000

A system and method for controlling an engine in a vehicle which allows the vehicle operator to manually request a vehicle speed in excess of the established vehicle speed limit that includes establishing a normal vehicle speed limit, establishing a passing duration period, establishing a passing override reset interval, and controlling the engine in response to operator input to provide a greater vehicle speed for a cumulative period not greater than the passing duration period at any time during the passing override reset interval. The system and method may include the capability of establishing a passing speed increment and controlling the vehicle speed during passing to limit the vehicle to a speed not exceeding the normal vehicle speed limit plus the passing speed increment.