AIM OF DEVELOPMENTSM2759756
AIM OF DEVELOPMENT

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Product Concept

• A subcompact to shatter all notions of class

Vehicle Outline


Exterior design

• A physique that conveys a sense of explosive forward momentum through its expression of condensing and releasing energy.
• Presents a handsome and lively expression with contours that are full of vitality.

4SD

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5HB

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Interior design

• Finely crafted interior quality that greatly surpasses notions of the class.
• The interior establishes a balanced contrast between a cockpit zone for enjoying driving and a passenger seat zone with a roomy, open-feeling space.
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Engine

Engine mechanical [SKYACTIV-G 1.3, SKYACTIV-G 1.5]
• For SKYACTIV-G 1.3 and SKYACTIV-G 1.5 are the following have been adopted to lower fuel consumption.
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― Mechanical resistance loss improvement from:
• Narrowed down crankshaft journal
• Optimized piston skirt shape
• Lowered piston ring tension
• Reduction of valve spring load
• Stabilization of timing chain behavior
• Optimized engine coolant passage
• Optimized water pump impeller shape
• Lowered drive belt tension
• Optimized oil passage
• Optimized oil pump shape
• Oil pump discharging pressure control has been adopted. (SKYACTIV-G 1.5)
― Pumping loss improvement implemented to achieve low fuel consumption
• Variable valve timing mechanism adopted on both sides of intake and exhaust. (SKYACTIV-G 1.5)
• Variable valve timing structure on intake side adopted (SKYACTIV-G 1.5)
― Cooling loss reduction implemented to achieve low fuel consumption
• Piston cavity has been adopted.
― Combustion efficiency improved to achieve low fuel consumption
• Multiple hole-type fuel injectors adopted
• Cooling loss improvement (with coolant control valve)
― Coolant control valve adopted
― Optimized engine coolant passage
Engine mechanical [SKYACTIV-D 1.5]
• Low compression ratio implemented to achieve low fuel consumption
― Combustion efficiency by low compression ratio (14.8)
• Weight reductions implemented to achieve low fuel consumption
― Aluminum alloy cylinder block adopted
― Hard-plastic intake manifold adopted
― Exhaust manifold integrated cylinder head adopted
• Mechanical resistance loss improvements implemented to achieve low fuel consumption
― Optimized oil passage
― Optimized oil pump shape
― Optimized engine coolant passage
― Optimized water pump impeller shape
• Weight reductions and mechanical resistance improvements implemented to achieve low fuel consumption
― Piston shape optimized
― Narrowed down crankshaft journal
• Heat loss reduced to achieve low fuel consumption
― Water jacket spacer adopted
• Cooling loss reduced to achieve low fuel consumption
― Coolant control valve adopted
Engine control [SKYACTIV-G 1.3, SKYACTIV-G 1.5]
• L-jetronic *1 and D-jetronic *2 type detectors have been combined for intake air amount detection, improving the accuracy of the intake air amount measurement.
― MAF sensor adopted
― MAP sensor adopted
― IAT sensor No.1 and No.2 adopted
SKYACTIV-G 1.5 (without EGR cooler)
• The engine coolant control valve adjusts the engine coolant control valve opening angle and supplies engine coolant to the appropriate engine coolant passage according to the changes in the engine coolant temperature.
• Further engine warming has been promoted by blocking each water passage while the engine is cool.
― Coolant control valve adopted
SKYACTIV-G 1.3
• Hydraulic variable valve timing control has been adopted on intake side, improving fuel economy and emission performance.
― Intake CMP sensor adopted
SKYACTIV-G 1.5
• Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.
Intake side: Electric variable valve timing control
― Intake CMP sensor adopted
― Electric variable valve timing motor/driver adopted
― Electric variable valve timing relay adopted
Exhaust side: Hydraulic variable valve timing control
― Exhaust CMP sensor adopted
• With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.
• Engine oil variable control has been adopted reducing engine load.
― Engine oil solenoid valve adopted
• With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy. (SKYACTIV-G 1.3, SKYACTIV-G 1.5 (with EGR cooler))
― Fuel pump control module adopted
• Generator output control adopted, fuel economy/idling stability improved. (with i-stop system)
― Current sensor adopted
• DC-DC converter control has been adopted for improved power supply stability. (without i-ELOOP)
― DC-DC converter adopted
• With the adoption of the i-ELOOP, charging efficiency during deceleration is improved. Because loss of engine force does not occur when the battery is recharged during deceleration, fuel economy is improved. (with i-ELOOP)
• LIN communication has been adopted to the current sensor (with i-stop system) and DC-DC converter (without i-ELOOP) for simplified wiring harnesses.
*1:Measures the intake air amount directly using the MAF sensor.
*2:Measures the intake air pressure introduced into the cylinder using the MAP sensor and calculates the intake air amount indirectly.
Engine control [SKYACTIV-D 1.5]
• By adopting boost control and attaining efficient, high air charging pressure in all ranges, low emission performance, low fuel consumption, and high torque/high response have been achieved.
• An exhaust gas recirculation (EGR) system has been adopted for cleaner exhaust emissions and improved fuel efficiency.
• i-stop control has been adopted for improved fuel efficiency, reduced exhaust gas emissions, and reduced idling noise.
• With the adoption of the i-ELOOP, charging efficiency during deceleration is improved. Because loss of engine force does not occur when the battery is recharged during deceleration, fuel economy is improved. (with i-ELOOP)


Suspension

• Front suspension
― Strut-type suspension adopted
― For the front crossmember, the welded flange has been eliminated (flange-less), the cross-section expanded and the connection rigidity of the welded parts improved to achieve both rigidity and light weight.
― By adopting a 6-point rigid mount-type front crossmember, the force generated from the tires is transmitted directly, and an agile vehicle response in low-to-mid speed range has been adopted.
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• Rear suspension
― A torsion beam axle-type rear suspension has been adopted.

Rear brake (drum)

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Rear brake (disc)

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Brakes

• Conventional brake system
― A vacuum pump has been adopted, improving brake force.
― For the front brake a ventilated-type disc brake has been adopted, improving braking force.
― For the rear brake (disc) a solid-type disc brake has been adopted, improving braking force.
― For the rear brake (drum) a leading trailing-type drum brake has been adopted.

Vehicle front side (L.H.D.)

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Vehicle front side (R.H.D.)

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Vehicle rear side

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• Antilock brake system (ABS)
― Electronic Brakeforce Distribution (EBD) has been adopted for improved safety.
― The ABS HU/CM, integrating both the hydraulic unit (HU) and control module (CM), has been adopted, resulting in a size and weight reduction of the system.
― An enhanced malfunction diagnosis system made possible by the use of Mazda Modular Diagnostic System (M-MDS) has improved serviceability.

Vehicle front side (L.H.D.)

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Vehicle front side (R.H.D.)

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Vehicle rear side

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Warning light and indicator light

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• Dynamic stability control
― Electrical brake assist control has been adopted, improving safety.
― The DSC HU/CM, integrating both the hydraulic unit (HU) and control module (CM), has been adopted, resulting in a size and weight reduction.
― An enhanced malfunction diagnosis system, used with the Mazda Modular Diagnostic System (M-MDS) adopted, improving serviceability.
― An automatic configuration function is being used, improving serviceability.
― The lateral-G and yaw rate signals received between the sophisticated air bag sensor (SAS) control module and the DSC HU/CM via controller area network (CAN) lines instead of the conventional combined sensor has been adopted, improving serviceability.

Vehicle front side (L.H.D.)

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Vehicle front side (R.H.D.)

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Vehicle rear side

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Warning light and indicator light

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Transaxle

• Manual transaxle (F66M-R)
― For SKYACTIV-G 1.5 and SKYACTIV-D 1.5, six-speed F66M-R manual transaxle has been adopted.
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• Automatic transaxle (CW6A-EL)
― For SKYACTIV-G 1.3 and SKYACTIV-G 1.5, six-speed CW6A-EL automatic transaxle has been adopted.
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• Automatic transaxle (EW6A-EL)
― For SKYACTIV-D 1.5, six-speed EW6A-EL automatic transaxle has been adopted.
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Steering

• Power steering
― A column assist-type Electronic Power Steering (EPS) has been adopted.
― EPS provides smooth handling from low to high speeds. This is a result of the excellent steering feel provided by the electronic control and the vehicle-speed responsive control.
― EPS does not require a power steering oil pump and generates assist force only when the steering wheel is steered. As result, engine load is lowered and fuel efficiency is improved.
― An automatic configuration and steering angle neutral position auto-learning function has been adopted, improving serviceability.

L.H.D.

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R.H.D.

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Safety

• The following have been adopted to improve safety
― Smart city brake support [Forward/Reverse] (SCBS F/R)
― Smart city brake support [Forward] (SCBS F)
― Adaptive LED headlights (ALH)
― High beam control (HBC) system
― Distance recognition support system (DRSS)
― Lane departure warning system (LDWS)
― Lane-keep assist system
― Driver attention alert (DAA)
― Blind spot monitoring system (BSM)
― Mazda radar cruise control (MRCC)
― Cruise control system
― Electronic control brake assist
― Electronic brake force distribution (EBD)
― Intrusion-minimizing brake pedal
― Tire pressure monitoring system (TPMS)
― ABS control
― TCS control
― DSC control
― Vehicle roll prevention function
― Hill launch assist (HLA)
― Secondary collision reduction
― Steering shaft with energy adsorbing mechanism
― Curtain air bags
― Side air bags
― Pre-tensioner and load limiter mechanisms
― Seat belt warning alarm
― ISOFIX and top tether anchors
― Seat belt warning alarm
― The multi-load path
― Triple H-shaped structure
― Straight structure
― Ring structure
― Auto light system
― High-mount brake light
― Emergency signal system (ESS)
― Active driving display
― Immobilizer system


Driver's support

• The following have been adopted to improve convenience and comfort
― Natural sound smoother
― Drive selection system
― Electric power steering (EPS)
― Steering column with tilt/telescoping mechanism
― Full-auto air conditioner
― Heated outer mirrors
― Outer mirror automatic folding
― Rear window defogger
― Advanced keyless entry system
― Keyless entry system
― Theft-deterrent system
― Push button start system
― Running light system
― Headlight auto leveling system
― Auto wiper system
― Center display
― Commander switch
― Park assist system
― Parking sensor system