The implementation of the Start-Stop system in many of the newly manufactured vehicles is producing significant changes in power systems, starting and charging it is important that the remedial know to avoid problems during surgery on them.
The batteries used in today’s cars, externally similar to traditional, are not of the same technology, so their way to check, refresh and replace can be different. Keep in mind that you should adapt to replace the battery, respecting the protocols specified by the manufacturer for both recharge and for connecting jump leads.
Due to the need for a good control of the electric power system, the use of current sensors placed on the battery terminals themselves (it is essential to negative). Using this input and output current in the battery itself is recorded for their ability at all times, so there is no risk of starting problems when the Start-Stop system decides to stop the motor vehicle stop. This sensor reports the battery voltage, temperature and current flow.
Current sensors housed in the battery terminal
In case something happens alternators. Alternators are in the market they need to generate an excitation current, others report their current power generation and others, called drones, receive from another control unit current level generated.
For starters you try to reduce the size, weight and increase reliability, as they must support a larger number of operating cycles.
The Start-Stop systems introduce other elements, among which voltage stabilizers, which prevent voltage drops at times to boot. Since certain comfort and audiovisual devices are switched off during the engine start, if the voltage stabilizers not incorporate certain elements of these systems could end up being damaged.
Brake booster pressure sensor
Because most vehicles use brake assist systems by vacuum (called booster) is vital that the system has a minimum of depression to achieve effective braking, so they put pressure switches or sensors at the entrance of the brake booster, which report the level gap. If you detect a low level of depression (below 400 mbar) engine shutdown or if standing for system performance is prevented, cause his new startup.
One of the priority conditions for the system to work is that the change has not engaged any gear, so vehicles with manual gearbox to position a sensor to report to the system drive with gear in neutral in the case of automatic gearboxes driving this sensor is already installed, so it only makes that information available via the multiplex network.
Gear position sensor
In future posts will delve on the technology incorporated in these systems.