Saturday, January 7, 2012

Performance With a Jeep Grand Cherokee ECU

The purpose of the Electronic Control Unit (ECU)installed in your Jeep Grand Cherokee, is designed to maintain the correct fuel/oxygen ratio. It controls the richness factor related to the mixture of the two elements, ensuring a well balanced power and fuel efficiency is maintained. A Jeep Grand Cherokee performance chip is a means of improving your throttle response and the engine horsepower. The function of this component is not designed to increase the actual power; it has the purpose of helping to utilise the advantages that are already available with the ECU, generally termed a Power-train Control Module (PCM).
A Jeep Grand Cherokee performance chipmodifies signals interpreted by the ECU and then adjusts the fuel curve. It is designed to create the best fuel/oxygen ratio to provide the vehicle with added horsepower, with a variant in the ratio setting between 12/1 and 14.7/1. As power is increased, the performance chip effectively decreases your fuel economy factor by a reported maximum of half-mile a gallon. The installation of this innovative component will not in any respect, prejudice the factory warranty and it is recorded that it operates efficiently with other minor performance upgrades that have already been installed.
Road conditions are a primary influence on fuel consumptionand the ability of drivers to use their vehicles as economically as possible has become increasingly dependent on a controlling device and its effect on performance. The innovation of this unit will automatically calculate the RPM, related to the engine load and thereafter diagnose the most favourable time to open the valve. This ensures the facility of precise timing with the combustion. The ECU has the capacity of controlling various actuators, which ensures high performance levels in an internal combustion engine. The creation of this factor is by way of multiple sensors, which supply data to the device. The related values are transformed into usually referred to ''Look-up Tables'' and based on this information the actuators are adjusted to meet the prevailing, driving conditions.
The electronic controlling device or PCM has a construction primarily consisting of microprocessors and various actuators. Since the recorded inception of this type of device in 1939 by BMW, it has introduced a new concept of performances in automobiles. In the process the need for sometimes, erratic manual control of fuel/oxygen mixture and ignition timing has been eliminated. The Jeep Grand Cherokee ECU determines the quantity of fuel to be injected, based on for example, the position of the throttle, the facility of air related to its quality and available quantity and the temperature of the engine coolant.
A controlling unit will adjust the timingto an extent whereby increased power would be experienced, with the benefit of improved fuel economy. Any form of knocking from the engine would be detected and the timing of the spark would accordingly be retarded, or delayed. As this type of actions usually occurs at low engine revolutions, a consequence would be for the device to instruct the Transmission Control Module to activate a gear downshift, to match the recorded RPM factor.