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Dive into the research topics where Lorenzo Guadalupe Rodriguez is active.

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Featured researches published by Lorenzo Guadalupe Rodriguez.


SAE transactions | 2000

“Smart sensing” of Oil Degradation and Oil Level Measurements in Gasoline Engines

Amiyo K. Basu; Axel Berndorfer; Carlos A. Buelna; James H. Campbell; Keith N. Ismail; Yingjie Lin; Lorenzo Guadalupe Rodriguez; Simon S. Wang

Proper lubrication of moving parts is a critical factor in internal combustion engine performance and longevity. Determination of ideal lubricant change intervals is a prerequisite to ensuring maximum engine efficiency and useful life. When oil change intervals are pushed too far, increased engine wear and even engine damage can result. On the other hand, premature oil changes are inconvenient, add to vehicle maintenance cost, and result in wasted natural resources. In order to determine the appropriate oil change interval, we have developed an oil condition sensor that measures the electrical properties of engine oil, and correlates these electrical properties to the physical and chemical properties of oil. This paper provides a brief background discussion of the oil degradation process, followed by a description of the sensor operational principles and the correlation of the sensor output with physical and chemical engine oil properties.


Archive | 2001

Oil condition trend algorithm

Carlos A. Buelna; Lorenzo Guadalupe Rodriguez; Axel Berndorfer


Archive | 1999

Shaft torque sensor with no air gap

Yingjie Lin; Daniel J. Moreno; Lorenzo Guadalupe Rodriguez


Archive | 2001

Soft-landing plunger for use in a control valve

Yingjie Lin; Lorenzo Guadalupe Rodriguez


Archive | 2008

Fluid level measuring system

Yingjie Lin; Lorenzo Guadalupe Rodriguez; Gregory J. Manlove; Maria De Los Angeles Chee


Archive | 2001

Ferromagnetic particle sensor

Lorenzo Guadalupe Rodriguez; Warren Baxter Nicholson


Archive | 2003

In-situ liquid viscosity measurement

Yingjie Lin; Lorenzo Guadalupe Rodriguez


Archive | 2000

Solenoid valve for a vehicle carbon canister

Lorenzo Guadalupe Rodriguez; Luis A. Flores-Mena; Alberto Alcantara; Yingjie Lin


Archive | 2001

Fluid control valve and system

Lorenzo Guadalupe Rodriguez; Jose I. Velazquez; Carlos E. Almeida


Archive | 2010

Electrostatically actuated non-latching and latching rf-mems switch

Lorenzo Guadalupe Rodriguez; James H. Campbell; Jose G. Mireles

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