- UK based Zeroshift limited has developed a new transmission technology that results in completely instantaneous change in gear ratio with no interruption of torque to the driving wheels.
- In theory, the zeroshift principle is simple.
- The new gear is engaged while the previous gear is still driving, eliminating the break in torque experienced in conventional manual and automated manual transmissions during a gear shift.
- As the new gear takes up the drive, the previous gear is automatically disengaged.
- Zeroshift achieve this using HBMs MGC Plus data logger and Catman software.
- The technology claims to outperform all other transmission technologies in terms of fuel economy and performance.
- It results in fuel economy of at least two percent compared to a manual transmission and 1% when compared to a planetary automatic transmission with an equivalent number of ratios. CO2 emissions are also reduced similarly.
- Due to zero torque interruption, performance is improved, which would allow downsizing of engine and thus a further potential to reduce CO2.
- Zeroshift is also claimed to be cheaper to produce than a DCT (Dual clutch transmission) or an equivalent automatic transmission with epicyclic gears.
- Further this gear shift mechanism may be built into an existing manual gearbox.
- The biggest advantage is the safety that results due to seamless gear shifting.
- Any interruption of engine torque to the wheels introduces a loss of control, which may be potentially unsafe in certain circumstances.
- For instance, torque interruptions at intersections, roundabouts and on highway ramps can cause accidents as the driver may require acceleration and find none.
- Even during emergency braking engine braking, engine braking is expected but is not available due to interruptions in gear shift.
- Zeroshift is also lightweight and compact, thus requiring lesser space, thereby resulting in the available vacant space in the frontal crumple zone, leading to increased safety.
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