# US 7,743,604 B1 · Apparatus for heating the dump body of a dump truck having a diesel particulate filter

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- Number: US 7,743,604 B1
- Document ID: US7743604B1
- Status: Granted
- Kind: B1
- Application number: 11/690,512
- Filed: 2007-03-23
- Granted: 2010-06-29
- Earliest claimed: 2007-03-23
- Inventors: Daniel Albanesi
- Web page: https://patentgrep.com/patent/US7743604B1

## CPC

- F01N 5/02: the devices using heat
- B60H 1/00014: {for load cargos on load transporting vehicles}
- B60H 1/20: using an intermediate heat-transferring medium
- B60K 13/06: using structural parts of the vehicle as ducts, e.g. frame parts
- F01N 3/021: by means of filters
- F01N 2240/36: an exhaust flap
- F01N 2560/06: the means being a temperature sensor
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A system for providing heat to the dump body of a dump truck is disclosed. The disclosed system is suitable for use with truck equipped with a diesel particulate filter. When enabled, the system controls the exit path of exhaust gas such that it is routed to the dump body during normal operating conditions. In one embodiment, when the diesel particulate filter enters a regeneration cycle, high heat is produced. The system then routes the exhaust gas as to bypass the dump body to avoid heat damage from the higher temperature exhaust gas.

## Claims

### Claim 1

A system for providing heat to a dump body of a dump truck using exhaust, comprising a diesel engine, an exhaust stack having a venting end, a diesel particulate filter having an input and an output for exhaust gas, exhaust gas from said diesel engine being routed to the input of the diesel particulate filter, and, an exhaust temperature control module, the exhaust gas output from said diesel particulate filter being routed to said exhaust temperature control module, said exhaust temperature control module comprising: i) temperature sensing means, said temperature sensing means including a first temperature sensor, and, ii) exhaust-diverting means, said exhaust-diverting means including a movable diverter member; wherein said exhaust temperature control module controls: i) said diverter member for movement to a position where exhaust gas is diverted to the dump body when the exhaust gas temperature is sensed by said temperature sensing means to be at or below a predetermined threshold temperature, and, ii) said diverter member for movement to a position where the exhaust gas bypasses the dump body when the exhaust gas temperature sensed by said temperature sensing means exceeds the predetermined threshold temperature.

### Claim 2 (depends on 1)

The system of claim 1, wherein the exhaust-diverting means additionally comprises:
an extension member;
an air cylinder, said air cylinder being connected to said extension member;
an air supply conduit connected to said air cylinder;
an air flow controller disposed inline with said air supply conduit;
said first temperature sensor providing a temperature signal to said air flow controller;
said diverter member including a control arm connected to said extension member; and
wherein said temperature signal causes activation of said air cylinder, moving the extension member, thereby moving said control arm and establishing the position of said diverter member.

### Claim 3 (depends on 2)

The system of claim 2, further comprising an operator control adapted to disable and enable said air flow controller, thereby providing an operator with the capability to disable said system.

### Claim 4 (depends on 3)

The system of claim 3, wherein said operator control further comprises a temperature selection control wherein said predetermined threshold temperature is adjustable by the operator.

### Claim 5 (depends on 4)

The system of claim 4, wherein said temperature selection control has a lower selectable limit of about 650 degrees Fahrenheit, and an upper selectable limit of about 800 degrees Fahrenheit.

### Claim 6 (depends on 2)

The system of claim 2, further comprising:
a second air flow controller disposed inline with said air supply conduit; and
a second temperature sensor, said second temperature sensor being configured to provide a temperature signal to said second air flow controller.

### Claim 7 (depends on 1)

The system of claim 1, wherein the exhaust-diverting means additionally comprises:
an extension member;
an electrically actuated magnetic control cylinder connected to said extension member;
an electric supply conduit connected to said cylinder;
a switch disposed inline with said electric supply conduit;
said first temperature sensor configured for providing a binary temperature signal to said switch;
said diverter member including a control arm connected to said extension member; and
wherein receipt of said binary temperature signal causes said switch to activate said electrically actuated magnetic control cylinder, moving said extension member, thereby moving said control arm, and establishing the position of said diverter member.

### Claim 8 (depends on 1)

The system of claim 1, wherein said exhaust-diverting means additionally comprises a heat-sensitive coil spring actuator disposed to control the position of said diverter member and configured to actuate at said predetermined threshold temperature, thereby establishing the position of said diverter member.

### Claim 9 (depends on 1)

The system of claim 1, wherein the exhaust-temperature control module is mounted to the venting end of the exhaust stack.

### Claim 10 (depends on 9)

The system of claim 9, wherein the exhaust-diverting means comprises:
an extension member;
an air cylinder, said air cylinder connected to said extension member;
an air supply conduit connected to said air cylinder;
an air flow controller disposed inline with said air supply conduit;
said first temperature sensor configured to provide a temperature signal to said air-flow controller;
said diverter member including a control arm being connected to said extension member; and
wherein said temperature signal causes activation of said air cylinder when said temperature signal is received by said air-flow controller, causing said air-flow controller to provide air to said air cylinder, thereby moving said extension member, thereby moving said control arm, and establishing the position of said diverter member.

### Claim 11 (depends on 10)

The system of claim 10, further comprising an operator control, whereby said operator control is disposed to disable and enable said air flow controller, thereby providing an operator with the capability to disable said system.

### Claim 12 (depends on 11)

The system of claim 11, wherein said operator control further comprises a temperature selection control, whereby said predetermined threshold temperature is adjustable by an operator.

### Claim 13 (depends on 12)

The system of claim 12, wherein said temperature selection control has a lower selectable limit of about 650 degrees Fahrenheit, and an upper selectable limit of about 800 degrees Fahrenheit.

### Claim 14 (depends on 10)

The system of claim 10, further comprising:
a second air flow controller disposed inline with said air supply conduit; and
a second temperature sensor, said second temperature sensor configured to provide a temperature signal to said second air flow controller.

### Claim 15 (depends on 9)

The system of claim 9, wherein the exhaust-diverting means additionally comprises:
an extension member;
an electrically actuated magnetic control cylinder connected to said extension member;
an electric supply conduit connected to said magnetic control cylinder;
a switch disposed inline with said electric supply conduit;
said first temperature sensor to output a temperature signal to said switch;
said diverter member including a control arm being connected to said extension member; and
wherein said temperature signal causes activation of said electrically actuated magnetic control cylinder, moving said extension member, thereby moving said control arm and establishing the position of said diverter member.

### Claim 16 (depends on 9)

The system of claim 9, wherein said exhaust-diverting means comprises a heat sensitive coil spring actuator disposed to control the position of said diverter member, wherein said heat sensitive coil spring actuator is configured to actuate at said predetermined threshold temperature, thereby establishing the position of said diverter member.

### Claim 17 (depends on 15)

The system of claim 15, further comprising an operator control, wherein said operator control is configured to disable and enable electric current in said electric supply conduit to said magnetic control cylinder, thereby providing an operator with the capability to disable said system.

### Claim 18

A system for providing heat to the dump body of a dump truck using exhaust, comprising a diesel engine, an exhaust stack having a venting end, and a diesel particulate filter, the exhaust gas of said diesel engine routed to the input of the diesel particulate filter, the exhaust output from said diesel particulate filter routed to an exhaust temperature control module, said exhaust temperature control module having temperature sensing means, and exhaust diverting means, whereby the exhaust gas is diverted to the dump body when the exhaust gas is at or below a predetermined threshold, and the exhaust gas bypasses the dump body when the exhaust gas exceeds a predetermined threshold, wherein the exhaust-diverting means comprises:
a diverter;
an extension member;
an air cylinder connected to the extension member;
an air supply conduit connected to said air cylinder;
at least one air flow controller disposed inline with said air supply conduit;
at least one temperature sensor, each said temperature sensor being configured to provide a temperature signal to one of said at least one air flow controllers;
a diverter control arm having a first and second end;
the first end of said diverter control arm being connected to said extension member; and
the second end of said diverter control arm being connected to the diverter; whereby said temperature signal causes activation of the air cylinder, moving the extension member, thereby moving the diverter control arm and establishing the position of the diverter.