Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_19643196_1 ( fleet__number VARCHAR, transmission VARCHAR, engine VARCHAR )

### Question ###
What is the fleet number when the transmission is Voith D863.4 and the engine is Cummins ISL?

### Accurate SQL ###

SELECT fleet__number FROM table_19643196_1 WHERE transmission = "Voith D863.4" AND engine = "Cummins ISL"