Take a ride on a powerful machine and take over the roads. It is boldly built to showcase shear strength that is complemented by superior performance and superb handling.

The Blue Core Engine
Next Generation Engine Technology

EFFICIENT

INCREASING
COMBUSTION
EFFICIENCY

SAVE MORE
FUEL

ULTIMATE
RIDING
PERFORMANCE

Overview

Yamaha Motor Co., Ltd. has been developing next-generation engines for city commuter vehicles destined for markets in the ASEAN region for some time. The company has recently designated the words "BLUE CORE" to represent the development ideal and direction for engines developed for ASEAN market commuter models.

BLUE CORE is a development ideal for next-generation engines that takes riding enjoyment, fuel efficiency and environmental performance to all-new levels. It will be the core ideal for the development of engines for all Yamaha Motor city commuter models to come. The central development principle to is create a "fundamentally excellent engine" by focusing on the following three points:

EFFICIENT

INCREASING COMBUSTION
EFFICIENCY

SAVE MORE
FUEL

ULTIMATE RIDING
PERFORMANCE

Main Customer Benefits

High fuel economy from its excellent fuel combustion efficiency and low horsepower loss design.

Easy-to-use engine characteristics (rideability) and ride performance in various environments from the optimised drive train components.

Stable engine performance due to the a new cooling system, DiASil Cylinder and more.

Technical Features

This engine is the product of several cross-business unit engine development projects initiated to implement the Platform Strategy and focused on the technical points for improvement below.

Improve
combustion
efficiency

Improve
cooling
performance

Low-revving,
high-torque
engine
character and
a high-geared
transmission

Reduce
mechanical
loss

Improve combustion efficiency

Achieved a high compression ratio (11.0:1) equivalent to a liquid-cooled engine while still being air-cooled

Improved combustion by inducing a strong tumble effect in the combustion chamber from the low-rpm range up through the high-rpm range

Improved fuel injection system matching such as optimized ignition timing

Improve cooling performance

Adopted the industry-proven, highly reliable DiASil Cylinder

Increased cooling surface area with thin, densely placed cooling fins

Adopted a shroud with a new shape optimized to effectively direct airflow - Adopted an oil jet piston cooler system

Low-revving, high-torque engine character and a high-geared transmission

An rpm range beneficial for fuel economy and drive train efficiency is set and, in combination with the high-geared transmission, it contributes to improved fuel economy

Lower rpm setting in the practical-use speed range improves fuel economy, lowers vibration and delivers a smooth feeling of acceleration, resulting in a comfortable ride

Lower idling rpm to contribute to reduced vibration and low-noise design plus improved fuel economy in traffic jam conditions

Reduce mechanical loss

Mechanical loss reduced by adopting the off-set cylinder design and low-tension piston rings

Roller rocker arm adopted to reduce friction, low-loss bearings and oil seals adopted throughout - High-efficiency cooling fan adopted to contribute to reduced horsepower loss

Low-rpm design generator adopted to contribute to reduced horsepower loss.