Patent ID: 8424293

Claim:
A method comprising: operating a vehicle including a diesel engine at an idle condition; applying a load to the diesel engine through a transmission of said vehicle coupled to said diesel engine during the idle condition to increase an exhaust temperature of the diesel engine relative to a nominal idle condition wherein applying said load includes: determining whether said transmission is capable of applying said load during said idle condition based on an operating temperature of said transmission; in response to determining that said transmission is not capable of applying said load during said idle condition due to said operating temperature, increasing an idle speed of said diesel engine to cool said transmission and waiting a predetermined period, wherein said increasing said idle speed and waiting said predetermined period are conditional upon determining that said transmission is not capable of applying said load during said idle condition due to said operating temperature; and in response to increasing said idle speed and upon said predetermined period elapsing, again determining whether said transmission is capable of applying said load; and regenerating a diesel particulate filter during the idle condition when said exhaust temperature exceeds a predetermined limit.