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Mack launches electronic control systems.

Mack launches electronic control systems

Mack Trucks, Inc., has introduced V-MAC[R] - the trucking industry's first in-cab, fully-integrated, all-vehicle electronic control system.

According to Paul Ritter, senior vice president-sales, the industry's newest electronic system contributes heavily to optimum vehicle performance and driver efficiency while providing superior fuel economy in full compliance with '91 emission standards.

V-MAC, Ritter added, is an acronym for Vehicle Management and Control and has been designed to accommodate a wide range of important present and future vehicle functions, including ones dealing with engine, transmission and brake parts.

The V-MAC serial link protocol (communication language) is in full compliance with those endorsed by the Society of Automotive Engineers and The Maintenance Council of the American Trucking Assn.

The system is currently available for certain 1991 Mack vehicles equipped with EM7-300, E7-350 and E7-400 series engines. Beginning in January 1, 1991, all 1991 model year over-the-road vehicles will feature E7 engines with V-MAC as standard equipment.

V-MAC permits precise, automotive-like electronic control of fuel delivery and engine timing for consistent vehicle performance regardless of load and conditions. Additional features include a road speed governor that limits vehicle speed to improve fuel economy, cruise control that is similar to a passenger car's system, Dynatard (engine brake) control that interacts with cruise control, variable-speed power take off (PTO) control, an engine shutdown and protection system, idle shutdown to save fuel, electronic speedometer and tachometer, and self-diagnostics to simplify maintenance.

The V-MAC consists of two main control modules. The V-MAC module is a microprocessor-based control for managing all electronic functions, while the Fuel Injection Control module is a subsystem used primarily for managing fuel injection.

The system uses a network of sensors which continuously monitor, adjust and record the performance of the vehicle. Coverage areas include water temperature, water level, oil pressure, air inlet temperature, rpm and mph, engine timing, and throttle position.

In the cab, two instrument panel indicator lamps permit efficient driver communication. An amber light indicates an electrical malfunction, while a red lamp signals an engine parameter out of range. Both lamps illuminate while an alarm sounds for two seconds whenever the vehicle is started.

Since its initial vehicle test run in December 1988, V-MAC has logged more than two million miles of on-highway evaluation. V-MAC has also been subjected to durability and reliability tests for several years. One test included a simulation of radio frequency interference that often exceeded the human hazard level - V-MAC remained completely functional throughout the test.

For further information, contact Dan Danko, Marketing Communications, Mack Trucks, Inc., (215) 439-2513.
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Title Annotation:Mack Truck Inc. V-MAC truck control system
Publication:Modern Brewery Age
Date:Aug 13, 1990
Previous Article:Pale Ale.
Next Article:International gives driver comfort/productivity.

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