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The Mack E-TechTM Engine -- The Future Has Arrived!
E-Tech Engine Features an Electronic Unit Pump Fuel System
LEHIGH VALLEY, Pa., March 21, 1997 -- Mack Trucks, Inc. has introduced the newest version of its Mack E7 V-MAC® engine -- the Mack E-Tech engine. The heart of the E-Tech engine is its electronic unit pump fuel system; but the improvements do not stop there. The engine also features the next generation of vehicle electronics, V-MAC III®, Mack's electronic Vehicle Management And Control system, and an all new high-tech J-TechTM engine brake.
"The E-Tech engine was designed with significant input from our customers," says Paul Vikner, executive vice president of sales and marketing. "This engine offers 'best in class' fuel economy, throttle response, and engine braking, without jeopardizing the high quality and reliability standards already established with the E7 engine," he adds. The E-Tech engine also paves the way for the company to reach global emission standards well into the 21st century.
Fuel Economy
More than 1.5 million miles and 30,000 hours of operation in test fleets show the E-Tech engine improves fuel economy 2 to 3 percent, compared to the current generation of E7 engine. This makes the E-Tech E7 engine an industry leader in fuel economy. The electronic unit pumps operate at up to 26,000 pounds per square inch of pressure. This results in better atomization of fuel, creating more efficient combustion and improved fuel economy. Fuel economy is further improved with the V-MAC III system. Electronic injection timing control, idle shutdown and electronic fan control all contribute to improving the operator's bottom line. The E-Tech engine still incorporates all of the fuel-saving features of the pump line nozzle version of the E7 engine, including: "high swirl" injection, four valve heads, and Schwitzer S300/400 turbochargers.
Performance Plus
Most drivers will immediately notice the E-Tech engine's improved throttle response, fully 20-30 percent quicker than the current E7. The E-Tech engine is available in three families and ten power ratings, from 275 to 460 BHP. Econodyne® conventional torque rise engine models include: the E7-300, E7-350, E7-400, E7-427 and E7-460. The powerful E7-460 provides 460 BHP at rated speed, with a 25 percent torque rise to 1660 lb-ft. MaxiCruiseTM high-torque-rise highway engines are available at E7-310/330, E7-330/350, and E7-355/380 ratings. The time-proven Maxidyne® vocational engines are offered at EM7-275 and EM7-300 levels.
Serviceability
The system features six electronic unit pumps, one for each cylinder, located on the side of the block, instead of under the valve cover like electronic unit injector systems. It's designed to lower maintenance costs and improve serviceability. The pumps are serviced as a unit, and they are easy to access and remove from the side of the engine. If a pump is replaced, injector calibration is performed easily and accurately using a personal computer or a Pro-Link service tool.
Another in-service feature is the ability to replace only the fuel injectors, instead of the entire pumping unit. Because the fuel injectors are easy to access, mechanics can check them during regular maintenance periods. Inspection of the injectors can easily be made part of the routine when performing valve adjustments or other preventive maintenance procedures on the engine. Replacement pumps, injectors and fuel lines all carry the same respective part numbers for all six cylinders, thereby reducing inventory and assuring availability. Also, there are no new special tools required to maintain the E-Tech engine.
New J-Tech Engine Brake
Mack and Jacobs' engineers have designed an engine braking system that has the highest overall retarding power per liter of any Class 8 engine. The new J-Tech engine brake uses a special exhaust valve camshaft profile to initiate the opening of just one of the two exhaust valves in the cylinder, near top-dead-center on the compression stroke. Exhaust valve motion is precisely controlled over the entire 360-degree valve event, resulting in 360 peak retarding horsepower at 2100 rpm. This patented technology results in an engine brake that delivers 40 percent more braking power over its predecessor, especially in the mid-range rpm's, where usable braking power is so important.
Kept the Best and Improved the Rest
The E-Tech engine starts with the proven E7 engine design as a foundation for its evolutionary improvements. For example, rather than a single head-mounted camshaft, the E-Tech engine retains its basic, easy to service, two cylinder head design and a block mounted camshaft for improved stability and stress tolerance. Also, the E-Tech engine continues to offer the longest standard oil drain interval in the industry -- 30,000 miles -- and retains its 500-700 pound weight advantage over competitor "big bore" engines. With its compact size, it's the only engine able to deliver 460 HP in a medium nose conventional chassis. The B-50 life-to-overhaul of the E-Tech engine is approximately 1,000,000 miles.
Best Warranty in the Industry
The E-Tech engine also boasts the longest standard warranty in the industry, three year/300,000 miles -- including parts and labor -- and five year/500,000 miles on major engine components. The standard warranty also includes one full year of roadside assistance.
For more information about the E-Tech engine, contact your nearest Mack dealer.
Dedicated to quality, reliability, and total customer satisfaction, Mack Trucks, Inc. has provided innovative, forward-thinking products and services to its customers worldwide for more than 95 years. Mack is one of North America's largest producers of heavy-duty trucks, in addition to major product components. The company also markets a line of medium-duty diesel trucks throughout North America. MACK® vehicles are sold and serviced in more than 65 countries worldwide.
About Jacobs
Jacobs Vehicle Systems is a wholly-owned subsidiary of Danaher Corporation (NYSE: DHR). The Jake Brake® product line is used by all North American heavy-duty diesel engine manufacturers as well as Hino, Hyundai and Mitsubishi in Asia, and Renault V.I. and DAF in Europe. Jacobs Vehicle Systems is headquartered in Bloomfield, Connecticut, where it has a 260,000 square foot design, manufacturing and test facility. Registered to the ISO 9001 standard, Jacobs Vehicle Systems is the world's leading producer of auxiliary braking systems, and can be found on the Internet at www.jakebrake.com.
Contact: Marian Zincke, Director Marketing at (860) 805-5454
Jake Brake®, Jacobs Vehicle Systems™, Jacobs Engine Brake®, and Jacobs Exhaust Brake® are registered trademarks of Jacobs Vehicle Systems, Inc.
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22 East Dudley Town Road - Bloomfield, CT 06002 - Phone: 860-243-1441
A subsidiary of Danaher Corporation www.jakebrake.com
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