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A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission or double-clutch transmission) is an automated manual transmission in motor vehicles, closely related to a manual transmission. It uses two separate clutches for odd and even gear sets. It can fundamentally be described as two separate manual transmissions with their respective clutches contained within one housing, and working as one unit. Although usually operated in a fully automatic mode, all have the ability to manually shift using the transmissions electrohydraulics.
A dual-clutch transmission eliminates the torque converter as used in conventional epicyclic-geared automatic transmissions. Instead, dual-clutch transmissions that are currently on the market primarily use two oil-bathed wet multiplate clutches, though dry-clutch versions are also available.
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We will use our 40+ years of fault finding experience to resolve your vehicle problems. We are specialists. We have the best trained staff..
We are trained on the latest systems and are equipped to the best standards. We have the best technical resources. We have a vast amount of specific experience.
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The root of all NVH problems is a vibration. In some cases, these are unwanted or unexpected vibrations, and in other cases, they are normal and always present (e.g. engine combustion), but they are noticeably disturbing when transmitted to the passenger compartment. Sound is simply a vibration that is transmitted through the air (or another medium) and is heard when it reaches a person's ear. Although the perfect hearing range is 20 Hz to 20 kHz, most of us are more like 100 Hz to 15 kHz at best. Vibrations are usually felt at frequencies below 200 Hz, and in the overlapping frequency, range vibrations can be both felt and heard.
In order to deal with this frequency range effectively, our NVH kits contain both microphones (for sound), and accelerometers (for vibrations). Traditionally, NVH problems have been viewed as difficult to solve, with NVH complaints being subjective as people have different levels of NVH acceptance or feeling. A technician needs the right tools and procedures to be able to tackle these issues effectively, to diagnose complaints in an objective, repeatable and easy manner. The NVH kit does this, while also generating customer reports to show that an improvement has been made against the customer’s complaint.
Your vehicle problems solved by specialist diagnostics services in Luton. Highly trained Technicians accurately identify vehicle faults and problems. We’ll advise on the necessary repair process. We will confirm the cause and suggest a course of action to solve the problem. You choose what you what to do. You remain in control of the budget. We apply our expertise, our experience, our resources and our skill in equal measure to ensure your problem is resolved in the most cost effective, value for money way
We have a vast inventory of main dealer equipment which includes; Ford IDS & FRDS Mercedes Star and aftermarket equipment such as; Snap-on Zeus, Autologic, Autel. Another piece of equipment used is an first look sensor. The FirstLook Engine Diagnostic Sensor offers a fast and accurate method to diagnose automotive engine problems such as burnt valves, bad injectors and other performance problems without major disassembly of the engine. When connected to the exhaust or vacuum side of the engine to be tested the FirstLook engine diagnostic sensors enables our technicians to quickly display a complete picture of core engine performance on a suitable digital storage lab scope.
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A Mechatronic unit uses a combination of mechanical & electronic engineering. The unit consists of a valve body assembly with solenoids. The electronic control unit is usally attached to the valve body with exceptions of the Porsche PDK a dual clutch transmission designed by ZF.
Most Mechatronic units with exceptions to the dry clutch units,
the valve body section simulates the same design from the standard automatic transmission ie ; Spool valves, Check valves, Thermostaic bypass valve. Springs are also used to resist and control the movement of the valve.
Servicing these transmissions are vital. They should be carried out at manufacture's service intervals. Essentially as the dual clutch transmission is two manual gearboxes in one housing, the swaf generation is substantial. Swaf is collected around the selector fork's magnetic sensor pick-ups for selector posistion & around the speed sensor pic- up ring.
Failure to keep this transmission maintained will result in an expensive failure. It is one of the reasons why the transmission control unit on a OAM 7spd dry clutch short circuits, as gear oil creeps in the back of the unit then BOOM ! needs a unit.