Unit 4114 Motorcycle Engineering Assignment Brief

Unit 4114 Motorcycle Engineering Assignment Brief

Introduction

In the UK, motorcycling accounts for approximately 1% of the total road traffic,  with an estimated 1.5 million active motorcyclists. The industry sees the sale of over 100,000 new two-wheeled powered vehicles annually, contributing to a total turnover exceeding £5 billion. Many of these riders are passionate enthusiasts with extensive knowledge about their motorcycles who expect the supply chain network to share their passion and expertise. To meet these high expectations, the industry aims to recruit and train competent and skilled technicians. Educating technicians to a high level will enable them to handle the complex and sophisticated motorcycles prevalent on the roads today.

The aim of this unit is to develop the knowledge and understanding of motorcycle design, engineering and operation by investigating the various forms and functions  of two-wheeled vehicle design including the physical and dynamic constraints on how motorcycles operate.

Among the topics taught in this unit are: fundamentals of motorcycle engineering including frame and steering geometry, effects of lateral and longitudinal forces,  low- and high-speed dynamics, ergonomics and the effect the rider has on stability; variants in two-wheeled powered vehicle design including power 2-stroke, 4-stroke, single or multiple cylinders; and battery power and supporting systems (frames, brakes, suspension, electronic aids).

On successful completion of this unit, students will be able to apply fundamental knowledge and understanding of motorcycle design including dynamic forces, propulsion technology, rider ergonomics and the design intent behind the variety  of motorcycles. Students will also develop an understanding of various elements  of motorcycle technology such as types of motive power, braking, suspension  and steering systems, and electronic systems including emissions control.

Learning Outcomes

By the end of this unit a student will be able to:

LO1 Define the dynamic forces encountered by a motorcycle

LO2 Discuss the design geometry of a variety of motorcycles

LO3 Demonstrate knowledge of the motive power of motorcycles

LO4 Examine the key aspects of motorcycle engineering.

Essential Content

LO1 Define the dynamic forces encountered by a motorcycle

The motorcycle sector:

• Industry overview, regional needs, history and progression of motorcycle engineering, future advancements, careers within the sector, occupational standards within the sector, government regulations and licencing requirements, professional accreditations.

Longitudinal forces:

• Accelerating
• Braking
• Gyroscopic effect

Lateral forces:

• Low-speed cornering
• High-speed cornering
• Lean angles

Environmental and ergonomic forces:

• Effects of wind, gradient, rolling, air composition
• Effects of rider position.

LO2 Discuss the design geometry of a variety of motorcycles

Styles and types of motor cycles:

• Mopeds
• Small motorcycles
• Tourers, cruisers
• Performance, adventure/ dual purpose
• Dedicated off-road.

Steering geometry:

• Wheelbase
• Rake
• Fork offset
• Mechanical trail/normal trail.

Rider ergonomics:

• Riding position for a moped, tourer or performance bike, rearward view
• Handlebar design and controls, cockpit design, display types accessibility view and glare reduction
• Seat design and foot controls/Critical seat heights
• Clothing, regional and global variations in rider attire.

LO3 Demonstrate knowledge of the motive power of motorcycles

2-strokes and 4-strokes internal combustion (IC) engines:

• 2-stroke operation single cylinder
• 4-stroke operation single cylinder
• Multi-cylinder configurations
• Variations.

Gear boxes and clutches:

• Manual gear box
• Automatic gear box
• Manual clutches
• Automatic clutches
• Chain drive and shaft drive
• Belt drives.

Alternative motive power:

• Electrical
• Hydrogen
• Alternative fuels for ICE petroleum E ratings.

LO4 Examine the key aspects of motorcycle engineering

Suspension:

• Front fork designs, damping and adjustment
• Rear suspension design twin shock absorbers and mono-shocks
• Electronics (ABS, Rider MODES, Emissions).

Brakes, tyres and wheels:

• Brakes: disc brake, caliper design, drum brakes, anti-lock braking system (ABS)
• Wheel design and geometry
• Tyre design and function, contact patch and profile variants, tread design and compounds.

Motorcycle electronics:

• Ignition systems electronic and electromechanical
• Rider aids
• Subsidiary systems: lights, indicators
• Fuel mapping emissions.