Coolpower

Last updated March 21, 2019

A coolpower setup in a truck engine can use an aftercooler mounted on top of the engine with a tip turbine fan, or an air-to-air cooler in front of the radiator. In either case, the goal is to cool the hot, compressed air going from the turbocharger into the engine. With the tip turbine, a small quantity of compressed air is bled off to spin a small fan that draws air through the aftercooler tubes. In some later models, a water cooler was also used, in addition to the tip turbine setup. Mack called the tip-turbine setup an intercooler and used a pyrometer to alert the operator if the exhaust gas exceeded a limit. The tip turbine setup was compact and the shorter plumbing runs allowed boost to build faster. Later models with the front mounted air-to-air cooler required a larger turbocharger to fill the tubes faster but with the benefit of additional power. Modern trucks use the air-to-air cooler in nearly all cases.

A truck or lorry is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration; smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of fire trucks, concrete mixers, and suction excavators.

An engine or motor is a machine designed to convert one form of energy into mechanical energy. Heat engines burn a fuel to create heat which is then used to do work. Internal combustion engines are heat engines that burn fuel in a combustion chamber to extract work from the pressure of expanding gases. Electric motors convert electrical energy into mechanical motion; pneumatic motors use compressed air; and clockwork motors in wind-up toys use elastic energy. In biological systems, molecular motors, like myosins in muscles, use chemical energy to create forces and eventually motion.

Exhaust gas emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuel, fuel oil, or coal

Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuel, fuel oil, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an exhaust plume.

Mack Trucks, Inc., is an American truck–manufacturing company and a former manufacturer of buses and trolley buses. Founded in 1900 as the Mack Brothers Company, it manufactured its first truck in 1907 and adopted its present name in 1922. Mack Trucks is a subsidiary of AB Volvo which purchased Mack along with Renault Trucks in 2000. After being founded in Brooklyn, New York, the company's headquarters were in Allentown, Pennsylvania from 1905 to 2009 when they moved to Greensboro, North Carolina. The entire line of Mack products is still produced in Lower Macungie, Pennsylvania, with additional assembly plants in Pennsylvania, Maryland, Australia, and Venezuela. There was also (previously) a Mack plant in Hayward, California.

The Mack R series was a line of Class 8 heavy-duty trucks introduced in the early 1960s by Mack Trucks. It replaced the very successful Mack B series models. R Model production ran for 40 years until the RD model was discontinued in 2002 and the RB and Mack D series DM models were discontinued in 2005. The first R models introduced were powered by Mack Thermodyne diesel and gasoline engines. In 1973 the R cab was given a makeover to include a deeper rear wall for more room and a new dashboard design.

An operating temperature is the temperature at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature. Outside this range of safe operating temperatures the device may fail. Aerospace and military-grade devices generally operate over a broader temperature range than industrial devices; commercial-grade devices generally have the narrowest operating temperature range.

The Mack Cruise Liner model built in 1984, a 6X4 Primemover, used a 320 horsepower (240 kW) coolpower engine.^[1]

Other meanings

Air intakes on turbochargers

The term is also used to refer to “Cool Power” air intake systems for turbocharged engines. These systems provide cooler air to the turbocharger and engine, instead of the potentially too-warm air from the engine compartment. Cooler intake air is denser, which means that the engine can produce the same power with less fuel. Cooler air also gives the engine more power for applications such as towing heavy loads up driving up steep grades during the summer. Cooler air drawn into the engine compartment lowers the temperature under the hood, which allows plastic, rubber and electronic parts to last longer. Lastly, cool power systems will supports larger turbochargers by creating additional air flow to the engine.^[2]

Hydraulic drive system

The US military uses the expression "cool power" to describe its "regenerative drive unit", a "light-weight hybrid hydraulic drive system" that weighs 330 pounds. The "system can generate nearly 1,000 foot-pounds force (1,400 N⋅m) of torque and power equivalent to a 340 horsepower (250 kW) engine." It operates by storing "energy normally lost as heat during the braking process in a high-pressure oil tank called an accumulator." The system use two hydraulic-fluid storage devices controlled by a central processor. One of the reasons the US military is interested in the system is that its "cool" power allows vehicles to move "... without generating a "thermal footprint" that can be identified by enemy tracking systems."^[3]

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A turbocharger, colloquially known as a turbo, is a turbine-driven forced induction device that increases an internal combustion engine's efficiency and power output by forcing extra compressed air into the combustion chamber. This improvement over a naturally aspirated engine's power output is due to the fact that the compressor can force more air—and proportionately more fuel—into the combustion chamber than atmospheric pressure alone.

An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V alternating current (AC) at 400 Hz, to run the electrical systems of the aircraft; others can produce 28 V direct current (DC). APUs can provide power through single- or three-phase systems.

A starter is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. Starters can be electric, pneumatic, or hydraulic. In the case of very large engines, the starter can even be another internal-combustion engine.

A four-strokeengine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed:

Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston.
Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are closed during this stage.
Combustion: Also known as power or ignition. This is the start of the second revolution of the four stroke cycle. At this point the crankshaft has completed a full 360 degree revolution. While the piston is at T.D.C. the compressed air-fuel mixture is ignited by a spark plug or by heat generated by high compression, forcefully returning the piston to B.D.C. This stroke produces mechanical work from the engine to turn the crankshaft.
Exhaust: Also known as outlet. During the exhaust stroke, the piston, once again, returns from B.D.C. to T.D.C. while the exhaust valve is open. This action expels the spent air-fuel mixture through the exhaust valve.

The turbojet is an airbreathing jet engine, typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet, a compressor, a combustion chamber, and a turbine. The compressed air from the compressor is heated by the fuel in the combustion chamber and then allowed to expand through the turbine. The turbine exhaust is then expanded in the propelling nozzle where it is accelerated to high speed to provide thrust. Two engineers, Frank Whittle in the United Kingdom and Hans von Ohain in Germany, developed the concept independently into practical engines during the late 1930s.

An intercooler is any mechanical device used to cool a fluid, including liquids or gases, between stages of a multi-stage compression process, typically a heat exchanger that removes waste heat in a gas compressor. They are used in many ways, including air compressors, air conditioners, refrigeration, and gas turbines, and automotive engines. Here they are widely known as an air-to-air or air-to-liquid cooler for forced induction internal combustion engines to improve their volumetric efficiency, which they do by increasing intake air density through nearly constant pressure cooling.

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.

Forced induction is the process of delivering compressed air to the intake of an internal combustion engine. A forced induction engine uses a gas compressor to increase the pressure, temperature and density of the air. An engine without forced induction is considered a naturally aspirated engine.

Power Stroke is a name used by a family of diesel engines for trucks produced by Ford Motor Company since 1994. Along with its use in the Ford F-Series, applications include the Ford E-Series, Ford Excursion, and Ford LCF commercial truck; the name was also used for a diesel engine used in South American production of the Ford Ranger.

Twin-turbo or biturbo refers to a turbocharged engine in which two turbochargers compress the intake charge. The most common layout features two identical turbochargers in parallel; other twin-turbo layouts include sequential and staged turbocharging, the latter of which is used in diesel auto racing applications.

The ALCO RSD-7 was a diesel-electric locomotive of the road switcher type built by ALCO at Schenectady, New York between January 1954 and April 1956. Two versions were built, with the same RSD-7 model designation but different specifications and power ratings, although both used the ALCO 244 engine in V16 configuration. Specification DL-600, of which only two were built, developed 2,250 hp and used the 244G engine. The revised specification DL-600A, numbering 27 locomotives, was rated at 2,400 hp and used the 244H engine. The RSD-7 was superseded by the ALCO 251-engined ALCO RSD-15, which looks very similar. The RSD-7 was the last ALCO diesel built with a 244 engine.

The Volvo D5 is a type of turbocharged diesel engine developed by Volvo Cars for use in its passenger cars. The D5 engine is based on Volvo Modular engine.

A supercharger is an air compressor that increases the pressure or density of air supplied to an internal combustion engine. This gives each intake cycle of the engine more oxygen, letting it burn more fuel and do more work, thus increasing power.

The Mack Titan is a heavy duty truck produced by Mack Trucks. Two variants are produced: one for the Australian market, introduced in 1995 aimed at heavy road train operators, and a 2008 version introduced in North America. The Titan can haul loads up to 200 tonnes GCM and comes with many heavy duty options that are not usually found on highway trucks.

The following outline is provided as an overview of and topical guide to automobiles:

The VR is a series of twin-turbo DOHC V6 automobile engines from Nissan with displacements varying from 3.0 to 3.8 L. An evolution of the widely successful VQ series, it also draws on developments from the VRH, JGTC, and Nissan R390 GT1 Le Mans racing engines.

A bonnet/hood scoop, sometimes called bonnet airdam/air dam, is an upraised component on the hood of a motor vehicle that either allows a flow of air to directly enter the engine compartment, or appears to do so. It has only one opening and is closed on all other sides. Its main function is to allow a direct flow of air to the engine, hence the need for it to be upraised so as to effectively channel air to the engine compartment. It may be closed, and thus purely decorative, or serve to enhance performance in several possible ways.

An electric supercharger is a specific type of supercharger that uses an electrically powered forced-air system that contains an electric motor to pressurize the intake air. By pressurizing the air available to the engine intake system, the air becomes more dense, and is matched with more fuel, producing the increased horsepower to the wheels.

Automobile air conditioning systems use air conditioning to cool the air in a vehicle.

The Mack MC/MR series, also known as the "Cruise-Hauler", is a cabover truck first introduced in 1978. It is of a distinct "set back front axle" design, with the driver compartment mounted ahead of the front axle and with a large, flat, divided windscreen covering almost half of the truck's frontal aspect. The chassis were very common for fire apparatus.

References

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[1] Trucks Plus Archived 2007-11-09 at the Wayback Machine .

[2] ttp://www.psmdiesel.com/air_03_without.html

[3] Permo-Drive Unveils Compact Hydraulic Drive System at 2003 SAE Show