* What is VVT Technology?
VVT is the short name of Variable Valve Timing, that’s improving power of the engine performance fuel economy by adjust the timing of valve’s closure according to the different working conditions
* VVT Engine’s feature:
1. Low fuel consumption , 2 Powerful, 3, environmental protection
* JAC J3 VVT engine Feature
1. Low fuel consumption , 2 Powerful, 3, environmental protection, 4, lightweight,5 low noise, 6, high stability
* JAC VVT Engine and Mitsubishi 4A9 comparison
The features of the engine is mainly based on its technology, specifications, the main spec are depended on its design, power consumption, torque and Fuel Economy
4A90 | 4A91 | JAC J3 VVT | JAC J5 VVT | ||
Displacement | 1.3L | 1.5L | 13L | 1.5 | |
cylinder bore(mm) | 75 | ||||
Travel(mm) | 75.4 | 84.8 | 75.4 | 84.8 | |
Compression ratio | 10.5 | 10.5 | |||
Valve gear | DOHC 4 Valve+MIVEC | DOHC 4 Valve+VVT | |||
Cam drive | cycle chain | timing chain | |||
C/B material | aluminum | aluminium magnesium alloy | |||
Moveability | light weight,Low-friction design | light weight, Low-friction design | |||
Intake manifold | Resin(Optimal design of the airway) | Resin | |||
Cylinder-head cover | Resin | Resin | |||
Cylinder cushion | The latest sealing structure technology 1 layer | ||||
exhaust system | The inverted type engine vehicle rear exhaust | The inverted type engine vehicle rear exhaust | |||
Max Power(kW/rpm) | 73/6000 | 83/6000 | 73/6000 | 83//6000 | |
Max Torque(Nm/rpm) | 126/4000 | 147/4000 | 126/4500 | 126/4000 | |
Power per liter(kW/L) | 56.2 | 55.4 | 56.2 | 55.4 | |
Emission standard | China IV(= Euro4) |
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