AIM OF DEVELOPMENT

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Product Concept

•  A Heart-stirring Crossover of Family Functionality and Self-indulgence

Vehicle Outline


Exterior design

•  Athletic proportions; a sleek cabin coupled with a strong and stable lower body and a planted trapezoidal stance when viewed from the front or rear.
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Interior design

•  Genuine materials—Nappa leather, rosewood and aluminum—combine to create an atmosphere of sophistication and indulgence that appeals to all the senses.
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Engine

•  For SKYACTIV-G 2.5T, the following has been implemented to lower fuel consumption.
―  Sliding resistance*1 reduction
•  Rocker arm (with built-in needle roller bearing) adopted for cam-contact area
•  Reduced valve spring load
•  Narrowed down crankshaft journal
•  Optimized piston skirt shape
•  Lowered piston ring tension
•  Lowered drive belt tension
•  Suppressed chain tensioner load by stabilized timing chain behavior
•  Oil shower pipe adopted
―  Mechanical resistance loss reduction
•  Optimized oil passage
•  Optimized oil pump shape
•  Engine oil variable control adopted
―  Pumping loss*2 reduction
•  Variable valve timing mechanism adopted on both intake and exhaust sides for fine control of exhaust amount and internal EGR volume
―  Weight reductions
•  Hard-plastic intake manifold adopted
•  Exhaust manifold integrated cylinder head adopted
―  Heat loss reduction
•  Water jacket spacer adopted
―  Cooling loss reduction in early stage of combustion
•  Piston cavity adopted
―  Cooling efficiency improvement
•  Air seal cowl adopted
•  Optimized cooling fan shape
•  Optimized engine coolant passage
•  Optimized water pump impeller shape
―  Combustion efficiency improvement
•  Multiple hole-type fuel injectors adopted
•  High-pressure fuel pump adopted
•  The HLA has been adopted to achieve the maintenance-free valve clearance.
•  4-3-1 type exhaust passages have been adopted to improve the acceleration/environmental performance.
•  L-jetronic*3 and D-jetronic*4 types have been adopted for the intake air amount measurement to achieve stable combustion free from abnormal combustion.
―  MAF sensor adopted
―  MAP sensor adopted
―  IAT sensor No.1 and No.2 adopted
―  Boost pressure sensor and boost air temperature sensor adopted
•  An ejector which can recirculate the evaporative gas in all engine ranges (boost range from non-boost range) has been adopted to improve the emission performance.
•  To improve the fuel economy and emission performance, an electric variable valve timing control has been adopted for the intake side, and a hydraulic variable valve timing control for the exhaust side. The electric type is adopted for the intake side to achieve expanded valve overlap and delayed closing of the intake valve (enlarged intake valve opening angle).
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
•  Engine oil variable control has been adopted to reduce the oil pump operation load on the engine.
―  Engine oil solenoid valve adopted
•  With the adoption of fuel pump control, fuel pump power consumption has been reduced to improve fuel economy.
―  Fuel pump control module adopted
•  Boost pressure control has been adopted to improve fuel economy/environmental performance/low-speed torque.
―  Dynamic pressure turbo adopted
•  To decrease generator operation loss, i-ELOOP has been adopted which generates electricity from energy occurring when the vehicle decelerates. (With i-ELOOP) (See: i-ELOOP [i-ELOOP].)
―  DC-DC converter (i-ELOOP) adopted
•  Generator output control has been adopted to improve fuel economy/idling stability.
―  A current sensor adopted (With i-stop system)
•  An exhaust gas recirculation (EGR) system has been adopted to achieve cleaner exhaust emissions and improve fuel economy.
•  To improve engine reliability, an ion sensor has been adopted which detects pre-ignition.
•  LIN communication has been adopted to the current sensor to realize wiring harness simplification. (With i-stop system)
•  i-stop control has been adopted to improve fuel efficiency, and reduce exhaust gas and idling noise. (With i-stop system)
*1  :Resistance (friction force) which occurs when objects slide. The larger the sliding resistance, the greater the energy loss.
*2  :Energy loss due to resistance in each part during intake/exhaust process is called pumping loss.
*3  :The intake air amount is directly detected by measuring the amount of intake air flow using the MAF sensor.
*4  :The intake air amount is detected indirectly by measuring the intake manifold pressure (pressure between downstream of the turbocharger and intake manifold) using the MAP sensor and boost pressure sensor.


Suspension

•  To Improve rigidity and handling stability:
―  A strut type front suspension adopted.
―  Multi-link rear suspension adopted.
―  For the front/rear crossmembers, 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 realized.
―  The caster angle and caster trail was increased on the front suspension.
―  The cross-section on the center member of the front crossmember has been expanded and the longitudinal offset of the front lower arm installation position reduced to realize an optimized framework.
―  The longitudinal span of the rear crossmember has been expanded and the longitudinal offset of the rear lateral link installation position reduced to realize an optimized framework.
―  By raising the installation position of the rear trailing link, the longitudinal input has been reduced, ride comfort improved, and the sense of safety during braking improved.
•  To improve handling stability and ride comfort:
―  Positions of the links and rigidity of the bushes were reviewed to increase toe-in for the lateral force input to the tires.
―  Grip of the rear tires was increased by the increased toe-in, and a mild vehicle response in high-speed range has been realized.
•  To improve marketability:
―  Affixing-type balance weights adopted.
•  Tires with optimized characteristics and low rolling resistance have been adopted.

Front suspension

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Rear suspension (2WD)

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Rear suspension (4WD)

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Driveline/Axle

•  Unit-design, double angular ball bearings with low rotational resistance have been adopted for the front and rear axles.
•  Unit bearings that require no preload adjustment have been adopted for the front and rear wheels.
•  The following parts have been adopted to reduce vibration and noise:
―  Bell-shaped constant velocity joint has been adopted for the wheel-side joint of the front drive shaft.
―  A tripod joint join have been adopted for the differential side constant velocity joint to reduce booming noise during high-speed driving and vibration when idling.
―  For 4WD vehicles, bell-shaped constant velocity joint has been adopted for the wheel-side joint of the rear drive shaft.
―  For 4WD vehicles, a tripod-shaped joint has been adopted for the differential-side constant velocity joint.
―  For 4WD vehicles, 3-part, 2-joint type propeller shaft with middle shaft bearing has been adopted.
•  For 4WD vehicles, the following parts have been adopted to improve off-road mobility and handling stability:
―  Electronic 4WD control system (i-ACTIV 4WD) which automatically and optimally controls drive torque distribution for the front and rear wheels.
―  Rear differential which integrates the coupling component to reduce size and weight.


Brakes

•  Conventional brake system
―  A brake pedal with an intrusion minimizing mechanism has been adopted. As a result, driver safety has been improved.
―  A small diameter long-stroke type master cylinder has been adopted, improving operability and response.
―  A vacuum pump has been adopted, improving braking force.
―  A large diameter, ventilated disc-type front brake has been adopted, improving braking force.
―  A large diameter, solid disc-type rear brake has been adopted, improving braking force.

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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•  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), improving serviceability.
―  Serviceability improved by the automatic configuration function.
―  Receives the lateral-G and yaw rate signals 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.
―  The vehicle roll prevention function, hill launch assist (HLA), roll over mitigation (ROM), tire pressure monitoring system (TPMS), and secondary collision reduction have been adopted, improving safety.

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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Transaxle/Transmission

•  Automatic Transaxle [GW6A-EL, GW6AX-EL]
―  GW6A(X)-EL-type electronically controlled automatic transaxle (SKYACTIV-DRIVE) with 6 forward gears, 1 reverse gear, and a TCC mechanism has been adopted.
―  Using the existing automatic transaxle as a base, fuel economy improvement, direct feel, and smooth shifting have been thoroughly pursued to make one of the most optimized automatic transaxle.
Main features
•  With the adoption of a full range TCC mechanism, a contribution to low fuel consumption and the direct feel of a manual transaxle have been achieved.
•  A control valve body has been adopted with an integrated TCM and improved responsiveness to achieve smooth and precise shifting.
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Steering

•  A column-assist type Electric Power Steering (EPS) has been adopted, reducing the fuel consumption.
•  A steering column with tilt/telescoping mechanism has been adopted, allowing fine adjustment of the driving posture.
•  A steering column and shaft with a shock-absorbing mechanism has been adopted to enhance the safety.
•  The EPS Control Module (CM) has been integrated with the EPS motor, resulting in a size and weight reduction.
•  EPS system is enabling high-function malfunction diagnosis using the Mazda Modular Diagnostic System (M-MDS).

L.H.D.

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R.H.D.

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Safety

•  The following have been adopted to improve safety.
―  360° view monitor
―  Advanced smart city brake support (Advanced SCBS)
―  Smart city brake support [Forward/Reverse] (SCBS F/R)
―  Adaptive LED headlights (ALH)
―  Traffic sign recognition system (TSR)
―  High beam control system (HBC)
―  Smart brake support (SBS)
―  Distance recognition support system (DRSS)
―  Lane departure warning system (LDWS)
―  Driver attention alert (DAA)
―  Blind spot monitoring system (BSM)
―  Lane-keep assist system
―  Mazda radar cruise control with stop & go function (MRCC with stop & go function) system
―  Cruise control system
―  Electronic control brake assist
―  Electronic brake force distribution (EBD) control
―  Intrusion-minimizing brake pedal
―  Tire pressure monitoring system (TPMS)
―  ABS control
―  TCS control
―  DSC control
―  Vehicle roll prevention function
―  Hill launch assist (HLA)
―  Trailer stability assist (TSA)
―  Roll over mitigation
―  Secondary collision reduction
―  Steering shaft with energy adsorbing mechanism
―  Air bag system
―  Curtain air bags
―  Side air bags
―  Pre-tensioner and load limiter mechanisms
―  Seat belt warning alarm
―  ISOFIX and top tether anchors
―  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
―  Auto reverse pinch protection function
―  Auto-dimming mirror


Driver's support

•  The following have been adopted to improve convenience and comfort.
―  Drive selection system
―  Electric parking brake (EPB)
―  Electric power steering (EPS)
―  Steering column with tilt/telescoping mechanism
―  Heated steering wheel
―  Full-auto air conditioner
―  Power liftgate (PLG) system
―  UV protection glass
―  Heated outer mirrors
―  Windshield wiper de-icer
―  Outer mirror automatic folding
―  Rear window defogger
―  Power seat system
―  Seat warmer system
―  Seat ventilation system
―  Position memory system
―  Advanced keyless entry system
―  Keyless entry system
―  Theft-deterrent system
―  Push button start system
―  Electric sunroof
―  Running light system
―  Headlight auto leveling system
―  Auto wiper system
―  Headlight cleaner system
―  Center display
―  Commander switch
―  Multi-information display
―  Parking assist system
―  Parking sensor system
―  Active air shutter system