Sensorless fuel level and oil change indicators

Details Sensorless fuel level and oil change indicators Sensorless fuel level and oil change indicators

2007-08-21

2007-08-21

Swarthout, Brent A. (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C180S065230, C340S450300, C701S022000

Reexamination Certificate

active

10868349

ABSTRACT:
Sensorless fuel level and oil change indicators are provided in a range extender for an electric vehicle. The range extender includes an engine, and an electric generating device driven by the engine to generate electric power supplied to the vehicle. The fuel level is calculated based on the generated power. The oil change indicator indicates that the oil should be changed when the number of engine rotor revolutions exceeds a threshold value. The electric generating device may be a dynamoelectric machine coupled to the engine by a shaft to operate as a motor for starting the engine. In response to prescribed engine conditions, the dynamoelectric machine is switched to operate as a generator driven by the engine to generate the electric energy.

REFERENCES:
patent: 4007629 (1977-02-01), Hochstein
patent: 4933852 (1990-06-01), Lemelson
patent: 5313191 (1994-05-01), Yamashita et al.
patent: 6333620 (2001-12-01), Schmitz et al.
patent: 6463967 (2002-10-01), Boyle
patent: 6622804 (2003-09-01), Schmitz et al.
patent: 2003/0065570 (2003-04-01), Fukushima et al.
patent: 2004/0013928 (2004-01-01), Yamauchi et al.
patent: 2005/0200463 (2005-09-01), Situ et al.

Affiliated with

Also associated with

Rating

Sensorless fuel level and oil change indicators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sensorless fuel level and oil change indicators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensorless fuel level and oil change indicators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3897372