Patent ID: 11904880
Assignee: DELPHI TECHNOLOGIES IP LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. An apparatus for providing a coast recommendation for an operator of a vehicle, the apparatus comprising:
a processor; and
a memory including instructions that, when executed by the processor, cause the processor to:
receive vehicle position data;
determine a projected route based at least in part on the vehicle position data;
determine a first speed change position and a first speed change target speed based at least in part on the projected route;
determine a first residual speed and a first residual speed position based at least in part on the first speed change position and the first speed change target speed, wherein the first residual speed corresponds to a speed to coast down prior to reaching the first speed change position;

determine a second speed change position and a second speed change target speed based at least in part on the projected route, wherein the second speed change position is further along the projected route than the first speed change position;
determine a second residual speed and a second residual speed position based at least in part on the second speed change position and the second speed change target speed, wherein the second residual speed corresponds to a speed to coast down to prior to reaching the second speed change position;
determine a first lower speed envelope based on the first residual speed wherein the first lower speed envelope is greater than or equal to the first residual speed;
determine a second lower speed envelope based on the second residual speed, wherein the second lower speed envelope is greater than or equal to the second residual speed;
determine an overall lower speed envelope based at least in part on the first lower speed envelope and the second lower speed envelope;
determine an upper speed envelope, wherein the upper speed envelope is less than or equal to an upper speed tolerance;
determine a target speed profile based at least in part on the first residual speed, the first residual speed position, the second residual speed, the second residual speed position, the overall lower speed envelope, and the upper speed envelope;
determine a coast start point based on the second residual speed and the second residual speed position while ignoring the first residual speed and the first residual speed position such that, when coasting starts at the coast start point, the vehicle coasts down to the second residual speed prior to reaching the second speed change position without decreasing below the overall lower speed envelope and without exceeding the upper speed envelope; and
communicate the coast start point to the operator of the vehicle.