New Engines Offer More Power, Better Fuel Economy and Low Noise

Honda GX390 Engine

Featuring four all-new models, the large GX engine line combines increased power and versatility with greater fuel economy in the same envelope. The new GX240, GX270, GX340 and GX390 engine models are overhead valve (OHV) horizontal shaft engines that offer users durable power for a wide range of demanding commercial, construction and rental applications.

In addition to the new GX series, Honda is expanding its iGX series with an all- new iGX340 and iGX390 engine. The iGX series offers further enhancements to the GX series, incorporating an electronic self tuning regulator (STR) governor. Similar to GX, iGX engines are also (OHV) horizontal shaft engines, yet provide additional advanced technologies for more complex applications.

“Our new GX and iGX series of engines have been redesigned to provide more power and excellent fuel efficiency while reducing emissions and noise,” said Scott Conner, assistant vice president, Honda Engines. “The new GX and iGX bring an enhanced level of value and performance to our customers.”

Potential applications for the large GX series of engines include:

The new large GX series of engines features a host of technologies and design elements that allow for improved power output. The new GX models produce 6 percent more power than previous models, making them among the most powerful engines in each of their respective categories. This additional power is achieved via an advanced combustion chamber design, the implementation of Digital Capacitive Discharge Ignition (CDI) with variable ignition timing, and an increased compression ratio.

Along with improved power, the new GX series of engines provides a significant reduction in noise and vibration, which is vital to end users of both commercial and residential engine applications. Noise has been reduced up to 5 decibels, making the new GX one of the quietest engines available in its class. A new reed-style breather valve and a new muffler design also contribute to the engine’s quiet operation, while a new light weight piston allows an optimized overbalance ratio for less operating vibration.

Although fuel efficiency is a key attribute of all Honda engines, fuel consumption in the new GX family of engines has been significantly improved for 2010. The new large GX engines increase fuel efficiency by 12 percent. In addition to increased fuel efficiency, the new GX engines will meet the 2011 EPA exhaust emission regulations without the use of a catalyst.

The all-new iGX engine series features an integrated electronic control unit (ECU) using Honda STR governor technology. A long life multi layer gradient density-type air filter extends the air cleaner maintenance interval by 50 percent. Premium features such as an electronically controlled governor, fully automatic choke and an automotive style electric starter are standard on the iGX series engines.

Potential new applications and attributes of this technology include:

Honda is the world’s preeminent engine maker, selling more than 24 million units globally in 2008 through a diverse array of automotive, motorcycle, and power equipment products. Honda engines are characterized by the same quiet and fuel-efficient technology that is behind the company’s reputation for premium quality.

All digits have a meaning – for example this is an Engine product code:

This letter shows product image as follows:

4-cycle Engine

2-cycle Engine

Unitized Engine and Transaxle

Power Products

2 & 4 cycle engine – Unitized transaxle – Brushcutter – Hand held Edger
Capacity code is shown by piston displacement in cubic cm. In the case of family series design, imaginary displacement is given in accordance with the output. In this case, the imaginary displacement is shown with one, “1” in the last digit.

Hedge trimmer: Capacity code is shown by the blade length in mm.

Blower: Capacity code is shown by the maximum air volume in cubic feet / min rounded-up to nearest 100 number.

Pump: Capacity code is shown by the discharge port diameter in inches x10

Generator: Capacity code is shown by generator out put in wattage

In the case of 4 cycle engines, PTO shaft configuration is described using the codes in the following table:

In certain design changes which affect the interchangeability, appearance, pricing, etc. this code is changed alphabetically.

In the case for the U.S.A. market, the code is S.

This code is used to identify different specifications of the same model. The differences could be types of control panels, mufflers, starting options etc.

This code is an additional control code for specifications such as packaging.