The aim of the engine management software is to achieve the greatest possible maximum torque, which means the same as a high maximum fuel mass. This maximum mass, however, is influenced by the following variables:
The fuel supply consists of all components that are involved in supplying diesel fuel from the fuel tank into the common rail system with the final aim of combustion, as well as the software-based control of this supply.
Component information:
1.) In contrast to BMW engines, the present engine is a system without electronic fuel pump (EKP)! The fuel is supplied by a purely mechanical pump facility.
2.) The (sensor) fuel-temperature sensor and the (actuator) fuel heater are covered within the framework of the present test modules.
The required volume is defined as the desired delivery volume of the fuel pump (unit: litres per hour). The fuel injection rate is defined as, among other things, the implementation of the driver request with regard to vehicle propulsion (unit: milligrams per cycle).
The sensor is supplied with +5 V voltage and has an upstream internal resistance of 2.49 k. The temperature dependency of the sensor is as follows (the temperature-dependent tolerances fall with rising temperature):
-40 °C -> 79.0 k to 109.5 k
-30 °C -> 41.3 k to 55.5 k
-20 °C -> 22.4 k to 29.4 k
0 °C -> 7.4 k to 9.2 k
+20 °C -> 2.7 k to 3.3 k
+40 °C -> 1.1 k to 1.3 k
+60 °C -> 522 to 595
+80 °C -> 259 to 289
+100 °C -> 138 to 149
+120 °C -> 77 to 84
+130 °C -> 59 to 64