ɪt wʊd nˌɑːt biː mˈɑːɹkɪɾᵻd ʌntˈɪl ɪts pɚfˈoːɹməns ˈiːkwəld ɐ pˈɛtɹəl ˈɛndʒɪn ænd tə hɪz nˈɑːlɪdʒ nˈoʊ dˈiːzəl ˈɛndʒɪn dˈɪd ðæt æt ðæt tˈaɪm.
It would not be marketed until its performance equalled a petrol engine and to his knowledge no diesel engine did that at that time.