Vehicle sensor cleaning based on a vehicle occupancy status

1. A computer comprising a processor and a memory storing processor-executable instructions, the processor programmed to:

upon determining that a vehicle is unoccupied, instruct a compressor to pressurize an accumulator of the vehicle; and

upon determining that the vehicle is occupied and that the accumulator is below a threshold pressure, instruct the compressor to pressurize the accumulator.

2. The computer of claim 1 , further programmed to:

upon determining that the vehicle is occupied, that an estimated duration for the vehicle to travel to a preset destination is below a threshold time, and that the accumulator is below the threshold pressure, instruct the compressor to remain idle.

3. The computer of claim 2 , further programmed to:

upon determining that the vehicle is occupied and that the accumulator is above the threshold pressure, instruct the compressor to remain idle.

4. The computer of claim 1 , further programmed to:

upon determining that an estimated distance for the vehicle to travel to a preset destination is below a threshold distance and that the accumulator is below the threshold pressure, instruct the compressor to remain idle.

5. The computer of claim 4 , further programmed to:

upon determining that the vehicle is occupied and that the accumulator is above the threshold pressure, instruct the compressor to remain idle.

6. The computer of claim 1 , further programmed to:

upon determining that obstruction of a sensor exceeds an obstruction threshold, instruct the accumulator to vent air through a nozzle directed at the sensor.

7. The computer of claim 1 , wherein the accumulator is a first accumulator, and the computer is further programmed to: upon determining that no occupants are present in the vehicle, instruct the compressor to pressurize a second accumulator of the vehicle.

8. The computer of claim 1 , further programmed to:

upon determining that the vehicle is unoccupied and that the accumulator is below a maximum pressure, instruct the compressor to pressurize the accumulator.

9. A method comprising:

upon determining that a vehicle is unoccupied, issuing an instruction to a compressor, the compressor pressurizing an accumulator of the vehicle as a result of receiving and executing the instruction; and

upon determining that the vehicle is occupied and that the accumulator is below a threshold pressure, issuing an instruction to the compressor, the compressor pressurizing the accumulator as a result of receiving and executing the instruction.

10. The method of claim 9 , further comprising:

upon determining that the vehicle is occupied, that an estimated duration for the vehicle to travel to a preset destination is below a threshold time, and that the accumulator is below the threshold pressure, issuing an instruction to the compressor, the compressor remaining idle as a result of receiving and executing the instruction.

11. The method of claim 10 , further comprising:

upon determining that the vehicle is occupied and that the accumulator is above the threshold pressure, issuing an instruction to the compressor, the compressor remaining idle as a result of receiving and executing the instruction.

12. The method of claim 9 , further comprising:

upon determining that an estimated distance for the vehicle to travel to a preset destination is below a threshold distance and that the accumulator is below the threshold pressure, issuing an instruction to the compressor, the compressor remaining idle as a result of receiving and executing the instruction.

13. The method of claim 12 , further comprising: upon determining that the vehicle is occupied and that the accumulator is above the threshold pressure, issuing an instruction to the compressor, the compressor remaining idle as a result of receiving and executing the instruction.

14. The method of claim 9 , further comprising:

upon determining that obstruction of a sensor exceeds an obstruction threshold, issuing an instruction to the accumulator, the accumulator venting air through a nozzle directed at the sensor as a result of receiving and executing the instruction.

15. The method of claim 9 , wherein the accumulator is a first accumulator, the method further comprising; upon determining that no occupants are present in the vehicle, issuing an instruction to the compressor, the compressor pressurizing a second accumulator of the vehicle as a result of receiving and executing the instruction.

16. The method of claim 9 , further comprising:

upon determining that the vehicle is unoccupied and that the accumulator is below a maximum pressure, issuing an instruction to the compressor, the compressor pressurizing the accumulator as a result of receiving and executing the instruction.

17. A vehicle comprising:

a compressor;

a first accumulator fluidly connected with the compressor;

a second accumulator fluidly connected with the compressor;

a first nozzle directed at a first sensor and fluidly connected with the first accumulator;

a second nozzle directed at a second sensor and fluidly connected with the second accumulator;

an occupancy sensor; and

a computer in communication with the compressor, the first accumulator, the second accumulator, and the occupancy sensor,

wherein the computer is programmed to, upon determining that the vehicle is unoccupied based on data received from the occupancy sensor, instruct the compressor to pressurize the first accumulator and the second accumulator of the vehicle, and wherein the computer is further programmed to, upon determining that the vehicle is occupied and that the first accumulator is below a threshold pressure, instruct the compressor to pressurize the first accumulator.

18. The vehicle of claim 17 , wherein the computer is further programmed to, upon determining that the vehicle is occupied and that the second accumulator is below the threshold pressure, instruct the compressor to pressurize the second accumulator.