The Car and Truck Fleet and Leasing Management Magazine

Honda Develops New Hybrid System

July 19, 2005

TOKYO, JAPAN — Honda Motor Co., Ltd. has developed a New Honda Hybrid System that features a 3-stage i-VTEC engine employing Honda’s intelligent VTEC (Variable Valve Timing and Lift Electronic Control) system to provide three stages of valve timing (low-rpm, high-rpm, and cylinder idle mode). This is combined with Honda’s IMA (Integrated Motor Assist) system that has been made significantly more compact and efficient. The New Honda Hybrid System utilizes the new technology, along with the performance of a 1.8L engine, to achieve an approximate 20 percent increase in system output over the current powertrain. The enhanced performance is achieved while improving fuel economy by 5 percent, reducing the system size by 5 percent and attainting lower emissions. The 3-stage i-VTEC engine employs three hydraulic pathways to couple and uncouple five rocker arm assemblies, providing three stages of valve control depending on the driving conditions to achieve a combination of responsive driving and fuel economy. Unlike the Prius, the engine starts from a dead stop, and launches the vehicle with electric motor assist. During deceleration when the cylinders are idle, combustion in all four cylinders is halted and the cylinders sealed shut, reducing pumping losses caused by engine aspiration for a 10 percent improvement in recovery of braking energy compared to the current model. In low-speed cruising, deceleration, and stationary modes, the engine is turned off. Additional design refinement — including the use of aluminum die-cast pistons, which feature low thermal expansion for less friction under high-temperature conditions, ion-plated piston rings, and plateau honing of the cylinder walls for a smoother surface — reduces friction as well. The New Honda Hybrid System will be introduced in the all-new Civic Hybrid, which will be launched this fall.
Twitter Facebook Google+

Comments

Please note that comments may be moderated. 
Leave this field empty:
 
 

Fleet Incentives

Determine the actual cost of owning and running a vehicle in your fleet. Compare vehicles by class and model.

FleetFAQ

Fleet Tracking And Telematics

Todd Ewing from Fleetmatics will answer your questions and challenges

View All

 

Fleet Management And Leasing

Merchants Experts will answer your questions and challenges

View All

 

Sponsored by

George Weimer served with Hertz Corp.’s leasing operations, leaving as vice president – sales in 1973 to become vice president of U.S. Fleet Leasing. In 1974, he joined Contel Service Corp. of Atlanta, as director of transportation services.

Read more

Fuel Saving Strategies Survey

View our 2008 survey to benchmark your fleet's fuel and green strategies with other fleets.
 

Fuel Calculator

A managed fuel program can help you save time and money and gain control over the way you fuel your vehicles. Determine your potential savings by using our fuel calculator.
Launch Fuel Calculator 

Fuel Prices

U.S. Gasoline and Diesel Fuel Prices.

Launch Fuel Prices 

Up Next

More From The World's Largest Fleet Publisher