Method for controlling an engine braking device of an internal combustion engine and an internal combustion engine for a motor vehicle

摘要

In a method for controlling an engine braking device of an internal combustion engine of a motor vehicle during an up-shift process of a transmission device connected to the internal combustion engine which includes a first cylinder bank and a second cylinder bank, an engine braking device acting on individual cylinder banks, a fuel supply device acting on individual cylinder banks and a shiftable transmission device, which comprises shiftable gearwheels and an input shaft which can be coupled to a crankshaft of the internal combustion engine by means of a clutch are provided and used during up-shifting to manipulate braking and powering up the cylinder banks and disengaging and up-shifting the transmission for a fast and smooth gear change operations.

主权项

1. A method for controlling an engine braking device (16) of an internal combustion engine (10) of a motor vehicle during an up-shift process of a transmission device (26) connected to the internal combustion engine (10), the engine having a first and a second cylinder bank (12a, 12b), an engine braking device (16) acting selectively on the first and the second cylinder banks (12a, 12b) for independently engaging or disengaging braking operation of the individual cylinder banks, the method comprising the steps of:
a) sensing an up-shift process demand; b) blocking the fuel supply to the first cylinder bank (12a) of the internal combustion engine (10) and simultaneously c) putting the first cylinder bank (12a) into braking mode by means of an engine braking device (16) acting on the first cylinder banks (12a); d) and, at the same time, increasing the fuel supply to the second cylinder bank (12b), so as to compensate for the power loss of the first cylinder bank, e) disengaging a gear of the transmission device (26) and concurrently f) blocking the fuel supply to the second cylinder bank (12b) for a rapid slow down of the engine to a predetermined speed permitting upshifting, and re-powering all the cylinders.