Fuel Heating Apparatus with Integrated Filter Element

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Solution Overview

Problem

Internal combustion engine fuel systems face issues with fuel gelling in cold climates, leading to clogged fuel filters and reduced fuel efficiency due to unregulated fuel temperatures, which result in costly downtime and decreased performance.

Innovation Solution

A fuel heating system with integrated heating elements and a temperature feedback control loop within the fuel filter, along with a heat exchanger to regulate fuel temperature, prevents fuel gelling and improves efficiency by pre-heating fuel before engine combustion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If external heating wraps are applied to the exterior of the fuel filter, then some heating effect is provided, but the heat is lost to the ambient environment and adequate heating of the fuel filter interior is not achieved

Engineering Contradiction:
Improvefuel filter temperatureVSAvoidheat loss to ambient environment
Core Design Contradiction:
TemperatureVSLoss of energy

Solution Approach 1:

The heating element is integrated within the fuel filter housing, merging the heating function with the filter structure. This internal placement eliminates heat loss to the ambient environment and ensures direct heating of the fuel passing through the filter, resolving the contradiction between providing heating and preventing energy loss.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fuel itself acts as an intermediary medium that transfers heat from the heating element to the filter media and surrounding components. By positioning the heating element internally, the fuel becomes the primary heat transfer medium, ensuring efficient heat distribution without loss to the external environment.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If fuel temperature is not regulated, then the system is simpler, but fuel efficiency varies significantly across diverse operating conditions

Engineering Contradiction:
Improvetemperature regulation system complexityVSAvoidfuel efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

A temperature sensor monitors the fuel temperature and provides feedback to a controller, which adjusts the heating element operation accordingly. This feedback loop maintains optimal fuel temperature across varying operating conditions, improving fuel efficiency while keeping the system relatively simple through automated control.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system dynamically changes the fuel temperature parameter based on operating conditions. By regulating the fuel temperature within an optimal range rather than maintaining a fixed temperature, the system adapts to diverse operating conditions and maintains consistent fuel efficiency without excessive complexity.

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If heating elements are placed on the exterior of the fuel filter, then installation is simpler, but adequate heat transfer to the interior of the fuel filter is not achieved

Engineering Contradiction:
Improveheating system installationVSAvoidgelling prevention effectiveness
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The heating element is combined with the fuel filter housing as an integrated assembly. This merging ensures reliable heat transfer to the fuel filter interior while maintaining ease of installation as a single pre-assembled unit, eliminating the trade-off between installation simplicity and heating effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If fuel is heated to prevent gelling, then engine operation consistency is improved, but additional energy consumption occurs

Engineering Contradiction:
Improveengine operation consistencyVSAvoidenergy consumption for heating
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The temperature sensor and controller work together to activate heating only when fuel temperature drops below the optimal range. This feedback-controlled operation prevents unnecessary energy consumption while ensuring engine operation consistency is maintained through targeted heating only when needed.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The fuel heating system serves itself by using the fuel as both the object to be heated and the medium for heat distribution. The heated fuel then maintains temperature as it circulates through the fuel system, reducing the need for continuous energy input while maintaining reliable engine operation.

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system effectively prevents fuel gelling, ensuring consistent engine operation and improving fuel efficiency by maintaining optimal fuel temperatures, reducing downtime and emissions while enhancing performance.

Implementation Method 1

The heating element includes one or more electrical leads passing through the support rod and out the fuel filter head for attachment to an electronic control. The heating element is operable to heat the fuel filter to prevent gelling of the fuel inside the fuel filter.

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

A heat exchanger to regulate fuel temperature, prevents fuel gelling and improves efficiency by pre-heating fuel before engine combustion.

Methodology Applied
Scientific EffectHeat exchanger: Heat Exchanger

Data Source

PatentUS12044195B2Fuel heating apparatus and methods
Publication Date: 2024.07.23 CT ENERGY HLDG LLC
  • US12044195B2 patent drawing
  • US12044195B2 patent drawing
  • US12044195B2 patent drawing

AI summary

A fuel heating apparatus including a heat exchanger body having a first removable end plate, a main body, and a second removable end plate opposite the first removable end plate. The first and second removable end plates are secured to opposing sides of the heat exchanger main body by a plurality of threaded fasteners. The first removable end plate includes a fuel inlet line and a thermal fluid inlet line, and the second removable end plate includes a fuel outlet line and a thermal fluid outlet line. The main body includes a plurality of interior first fluid pathways and a plurality of interior thermal fluid pathways defined therein, the interior first fluid pathways being responsible for connecting the fuel inlet line to the fuel outlet line and the interior thermal fluid pathways being responsible for connecting the thermal fluid inlet line to the thermal fluid outlet line.