1213 results about "Fuel filter" patented technology

Provided is a composite fuel filter material which comprises (A) a support layer made of wet laid cellulose and / or synthetic fibers, (B) a barrier layer having wet laid glass fibers for providing increased efficiency to the filter material, (C) a thermosetting bonding agent dispersed through the composite and in an amount sufficient for bonding the composite into a strong, tear resistant and pleatable material, and (D) a water repellant agent dispersed in the composite for removing and coalescing water dispersed in a fuel to be filtered. In a preferred embodiment for a diesel fuel filter, the glass fibers have an average diameter of about 0.1 to 2.0 microns and the thermosetting bonding agent is an epoxy resin in the composite in an amount of between 1 and 5% by weight. A filter efficiency of at least 90% or even 99% can be achieved, along with a water removal of 90 to 99.9%. Preferably, the barrier layer has a small amount of synthetic fibers therein and an interface between the support layer and the barrier layer is mechanically interlocked.

A fuel filter includes mating housing portions defining an interior cavity. A pipe in the housing includes a central flow passage with an opening along the length of the pipe, and an exterior groove. A latch device with discrete fingers closely surrounds the pipe and is engageable with the groove to prevent the latch device (68) from moving axially along the pipe. The latch device has an annular sleeve, radially-outwardly spaced from the fingers. A moveable valve device surrounds the pipe and has a valve sleeve normally covering the opening in the pipe. An annular base on the sleeve includes radially projecting tabs defining a plurality of slots. A filter element is removeably located in the housing and has an end cap with a valve actuating portion. The valve actuating portion includes a cylindrical portion and an annular base projecting radially inward from the cylindrical portion. The valve actuating portion includes a plurality of thin, flat keys spaced around the annular base and projecting radially inward from the cylindrical portion and axially outward from the base. The keys have first portions which project through the slots in the valve device and engage the sleeve of the latch device to unlock the latch device from the pipe, and second portions which engage the base of the valve device and move the valve device to uncover the opening in the pipe, when the filter element is inserted into the housing.

A real-time maintenance alert system and method for use in a heavy-duty truck having an engine controller with memory are provided. The system includes a sensor operative to indicate an engine condition from the group consisting of: oil filter restriction, air filter restriction, fuel filter restriction, oil level, and coolant reserve tank fluid level. Control logic at the engine controller processes the sensor signal to determine a real-time fault condition, when appropriate.

A fuel filter system, particularly a diesel filter, including a housing, a particle filter arranged in the housing, and a coalescer element mounted on the particle filter. Fuel passes successively through the serially connected coalescer and particle filter. The coalescer element improves the separation of any water contained in the fuel to be filtered, while exhibiting no or no significant fuel-filtering properties.