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_name_42 (engine_name VARCHAR, max_torque_at_rpm VARCHAR)

### Question ###
What is the engine name that has a maximum torque at rpm of n·m ( lbf·ft ) @ 3,800?

### Accurate SQL ###

SELECT engine_name FROM table_name_42 WHERE max_torque_at_rpm = "n·m ( lbf·ft ) @ 3,800"