Patent ID: 9708954
Date: 2017-07-18
CPC Classifications: F01N,Y02A,Y02T

Claim:
1. A vehicular fluid injection system comprising: a storage tank; an injection line; a heating system, wherein the heating system comprises at least one electrical heating element in the storage tank powered by a power source and at least one electrical heating element in the injection line; and an electronic control unit (ECU) including a step-up voltage converter positioned between the power source and the electrical heating elements, wherein the step-up voltage converter is a DC-to-DC converter configured to electronically vary its voltage output, or to vary its voltage output in a step by step manner, and the ECU provides a first and a second power regulation stages of the at least one electrical heating element, a DC-to-DC conversion being the first power regulation stage and a pulse width modulation (PWM) regulation being the second power regulation stage, and wherein the ECU is configured to switch off the at least one electrical heating element when supply voltage of the power source exceeds a predetermined voltage.