Transmission gear shift indication techniques

摘要

Transmission gear shift control techniques can include calculating, at a controller of a vehicle powered by an internal combustion engine, the controller including one or more processors, brake specific fuel consumption (BSFC) for each of: (i) a current gear of a transmission of the vehicle, (ii) a lower gear than the current gear of the transmission, and (iii) a higher gear than the current gear of the transmission, wherein the transmission is one of a manual transmission and an automatic transmission operating in a manual mode. The techniques can include determining, at the controller, which of the current gear, the lower gear, and the higher gear has a smallest BSFC to obtain a desired gear of the transmission. The techniques can also include outputting, from the controller, an indication to shift the transmission to the desired gear.

主权项

1. A method, comprising:
determining, at a controller of a vehicle powered by an engine, the controller including one or more processors, whether a gear shift of a transmission of the vehicle is occurring; determining, at the controller, whether both an engine speed and a vehicle speed are stable; in response to determining that a gear shift of the transmission is not occurring and after determining that both the engine speed and the vehicle speed are stable, calculating, at the controller, brake specific fuel consumption (BSFC) for each of:
(i) a current gear of the transmission,(ii) a lower gear than the current gear of the transmission, and(iii) a higher gear than the current gear of the transmission, wherein the transmission is one of a manual transmission and an automatic transmission operating in a manual mode; determining, at the controller, which of the current gear, the lower gear, and the higher gear has a smallest BSFC to obtain a desired gear of the transmission; and outputting, from the controller, an indication to shift the transmission to the desired gear.