Honda Engines Background Information

3/14/2005 3:19:41 PM

Honda is the world's largest manufacturer of engines, producing and marketing nearly 20 million units globally for automotive, motorcycle, marine, and power equipment products. Honda Engines offers a complete line of small, general purpose engines for commercial, rental industry, and consumer applications. Ranging from 1.0 to 24.0 horsepower, Honda engines supply smooth, low emission, dependable power for more than 3,000 different product applications including pressure washers, lawnmowers, rescue and construction equipment and recreational go-karts.

In addition to low levels of pollution, Honda engines are some of the quietest, easiest to start, most fuel-efficient, and most durable of their kind, even in harsh commercial and construction environments. Such attributes have made Honda engines the popular choice for original equipment manufacturers looking to add value to their own brands.

Product Line

Honda produces 35 models in four basic series:

Series
Primary Uses
Power Range
Mini Four-stroke
2 models
Hand-held portable equipment
1.0-1.5 hp

GX (Overhead Valve)
21 models

iGX (Overhead Cam)
1 model

Commercial and rental equipment


Commercial and rental equipment

3.0-13.0 hp (single cylinder)
16.0-24.0 hp (V-twin)

15 hp (single cylinder)

GS (Overhead Cam)
2 models
Premium residential and light-duty
commercial markets
6.0 hp
6.5 hp
GC (Overhead Cam)
9 models
Home use power equipment
4.0-6.5 hp (single cylinder)
16.0 hp (V-twin)

Starting with these 35 basic models, Honda offers more than 400 variations to meet a wide variety of needs in the 1.0-24.0 hp range.

Mini Four-Stroke Technology for Better Performance, Cleaner Air

Honda was the first to incorporate quiet, low-pollution four-stroke technology in engines down to 1.0 hp, which makes them ideal for applications such as trimmers or small tiller/cultivators that previously could only be powered by two-stroke engines. Honda's GX25 360Á inclinable four-stroke engines can be used and stored in any position through an innovative design that keeps oil in a completely misted state, lubricating moving engine parts and ensuring that oil cannot accidentally flow into the combustion chamber.

The advanced design of these engines, including an overhead valve (OHV) cross flow combustion chamber, provides a wide, smooth range of torque unique to four-stroke technology. State of the art design and manufacturing techniques have reduced the number of moving parts. Examples include the use of a single camshaft that actuates both the intake and exhaust valves and the integration of the engine cylinder head and upper crankcase into one piece. The result is reduced weight, smoother operation and improved reliability, as well as twice the fuel efficiency and approximately one-seventh the hydrocarbon emissions of a comparable two-stroke engine.

New for 2005 is the all-new GX35 mini four-stroke engine which replaces the GX31 as Honda's most powerful engine for handheld applications. Based on the same Honda 360-degree-inclinable mini four-stroke technology as the GX25, the 35.8cc GX35's oil-immersed timing belt and overhead-cam (OHC) architecture makes it possible to incorporate the valve train into the oil reservoir. This results in a substantial reduction is size and weight over the GX31, making it comparable to a competitive two-stroke engine in those areas.

Unlike many two-stroke competitors, the GX35 delivers powerful output across a wide range of operating speeds with ample low-speed torque, which means that it does not always need to be operated at wide open throttle. This reduces noise and operator fatigue, while substantially increasing fuel economy and decreasing emissions.

Honda GC Series of Overhead Cam Engines

The GC series is Honda's solution to the need for quiet, efficient, and low emission engines specifically designed for home-use power equipment applications that require more power than the mini four-stroke. Models range from 4.0 to 16.0 hp and have dry weights from 21.7 to 67.2 lbs. Honda's innovative design features - including the world's first internal timing belt on an engine of this kind, a tough nylon overhead cam, and uniblock construction - make the engines lighter and more compact than any other engines in their class with significantly reduced noise and vibration levels and reduced fuel and oil consumption.

Combined with Honda's innovative DuaLube(TM) lubrication system, the result is a simple, sophisticated design that minimizes the number of parts and reduces many potential maintenance needs.

The GC series includes the 6.0 hp GC160 (horizontal shaft) and the 6.5 hp GCV160 (vertical shaft). Honda GC Series engines are designed specifically for premium, high volume residential power equipment applications. Horizontal shaft models are ideal for a variety of consumer products, including pressure washers, water pumps, compressors and portable generators. Vertical shaft models power devices like lawnmowers and pressure washers but also find applications in other residential uses.

Additionally, Honda also has introduced electric start options on the GC160, GCV160, GC190 and GCV190 models, available nationally through Honda Engine distributors and to OEMs.

Rounding out the GC series is the V-twin GCV530. This 530cc engine combines the space-saving OHC design with 90Á V-twin cylinders to power larger residential equipment like lawn tractors. The V-twin design is ideal for canceling vibration, and its high-strength sintered-aluminum connecting rods minimize cylinder offset and reduce overall vibration to some of the lowest levels in its class.

The GCV530 features Honda's most advanced lubrication technology. The QuadraLube(TM) system efficiently lubricates critical engine components using both pressure and splash, and the two timing belts carry oil to the valve area. This advanced oil delivery system provides the GCV530 with superior lubrication at a reduced weight and with quieter operation and a more compact design.

Noise also is controlled by the two Honda-developed built-in OHC timing belts, lightweight resin cams, and an extra-quiet turbo cooling fan. The combination of advanced technology, simplified design and world-class manufacturing provides an engine that stands alone in the 16.0 hp class for superior power, reliability, and cost performance.

Honda GS Series of Overhead Cam Engines

The recently introduced Honda GS series is positioned squarely between the GC series premium residential and the GX series commercial engines.

The new 6.0 hp GS190 horizontal shaft and GSV190 6.5 hp vertical shaft models are designed to serve both premium residential and light-duty commercial markets. Intended for use on such popular applications as pumps, blowers, mowers, and tillers, Honda's newest engines satisfy the homeowner seeking ultimate performance, and the contractor seeking a lightweight, compact package.

Capitalizing on the same basic overhead cam (OHC) architecture as Honda's extremely popular GC engines, the GS features uniblock construction and a unique internal timing belt design that results in the lightest and most compact package in its class. With 187 cubic centimeters of displacement, this efficient design also delivers an unparalleled power to weight ratio and quiet operation, and easy starting.

To further enhance performance and durability, the Honda GS engines incorporate a cast iron cylinder sleeve and a redesigned piston with a three-piece oil control ring. Adding to the engine's commercial character, the GSV190 features ball bearings on the flywheel side of the crankshaft, while the GS190 utilizes ball bearings at both ends of the crankshaft. A dual stage air filter with an oiled pre-filter enhances engine performance in the dusty environment often created by mowing or tilling, and a cast aluminum valve cover rounds out the package.

The new Honda GS engines exemplify Honda's fundamental design philosophies of durability, quality, reliability, ease of starting, high fuel economy and low emissions.

Honda GX Series of Overhead Valve Engines

The GX series offers reliable, easy starting and fuel efficient power for a variety of commercial applications. Its rugged OHV design ensures a high level of durability and reliability for construction, maintenance and premium power equipment and makes the engines ideal for the rental market. This market relies on Honda OHV engines to ensure customer satisfaction with a minimal level of maintenance and repair.

Honda produces 21 models in the GX series, ranging from 3.0 to 24.0 hp. As with the GC series, these are available in either horizontal or vertical shaft and in either single cylinder or V-twin versions. The single cylinder, horizontal shaft models - GXH50, GX100, GX120, GX160, GX200, GX240, GX270, GX340, and GX390 - offer from 3.0 to 13.0 hp and power a variety of commercial equipment from small pumps and generators to cement mixers, pressure washers, trenchers, concrete saws and construction equipment. The single cylinder vertical shaft models - GXV50, GXV140, GXV160, GXV340, and GXV390 - perform similar functions where a vertical shaft is required, such as in commercial lawnmowers, power turf equipment, and floor buffers.

The GX OHV V-twins offer capability from 16.0 to 24.0 hp in three horizontal shaft models - GX610, GX620 and GX670 - and four with vertical shafts - GXV530, GXV610, GXV620 and GXV670. The GX V-twins offer the same advanced technology found in the single cylinder GX engines, adding commercial-grade features such as a high capacity, automotive style air cleaner, high pressure lubrication system, and a forced-air oil cooler on the 670 models that constantly maintains optimum oil temperature during prolonged operation.

The Honda iGX: a New Generation of Intelligent General Purpose Engines

Honda's newest addition to its engines lineup is the iGX, the revolutionary intelligent computer controlled general purpose engine that sets an even higher standard for ease of use, value fuel efficiency, and quiet operation. For the first time in power equipment history, the all-new iGX features an integrated electronic control unit (ECU) that delivers complete drive-by-wire remote control capability and controls key aspects of engine operation. While the iGX 440 15 hp overhead cam (OHC) engine features all-new architecture, it actually serves as an extension of Honda's legendary GX series of commercial grade engines.

Benefiting both consumers and the environment, iGX technology results in lower fuel consumption, lower emissions, and lower noise through reduced total engine running time and engine speed that can be lowered based on power demands. This intelligent technology works in conjunction with the new engine's V-type valve layout and sparkplug-center combustion chamber to yield a fuel economy increase of approximately 15 percent compared to a similar conventional engine.

Additionally, the iGX is easier for inexperienced users to operate, eliminating the need for manual manipulation of the choke and throttle and making it ideal for rental applications. Honda's newest model debuted nationally through Honda engine distributors during the summer of 2005.

Investment in America

Honda manufactures engines and other components around the world and maintains assembly plants at locations that best serve its customer base. Honda's Swepsonville, North Carolina, Power Equipment plant employs 550 U.S. workers, and represents an investment of more than $140 million in domestic manufacturing capabilities.

Editor's Note:

Honda Power Equipment, a division of American Honda Motor Co., Inc., manufactures and markets a complete range of outdoor power equipment, including outboard marine engines, general purpose engines, generators, lawnmowers, pumps, snowblowers, tillers and trimmers for commercial, rental and residential applications. Its comprehensive product line is powered exclusively by environmentally advanced 4-stroke engines.

Information for media regarding Honda products is available at www.hondanews.com.
Consumer information regarding Honda products is available at www.honda.com.

For product inquiries and dealer locations, please call 800-426-7701.